The International System of Units (SI) is the modern form of the metric system and is widely used in science, industry, and everyday life. It standardizes units of measurement worldwide, facilitating communication and consistency. These multiple-choice questions will test your understanding of the SI system.

- Which of the following is a base unit in the International System of Units (SI)?

A) Newton

B) Kilogram

C) Pascal

D) Joule**Correct Option: B****Explanation: The kilogram (kg) is a base unit in the SI system, representing the unit of mass.** - What is the base unit for measuring time in the International System of Units?

A) Second

B) Minute

C) Hour

D) Day**Correct Option: A****Explanation: The second (s) is the base unit for measuring time in the SI system.** - Which of the following is a derived unit?

A) Meter

B) Second

C) Pascal

D) Kilogram**Correct Option: C****Explanation: The pascal (Pa) is a derived unit, representing the unit of pressure.** - What is the SI unit of force?

A) Pascal

B) Newton

C) Joule

D) Kilogram**Correct Option: B****Explanation: The newton (N) is the SI unit of force, defined as the force required to accelerate a one-kilogram mass by one meter per second squared.** - Which of the following is the correct unit for measuring energy?

A) Newton

B) Joule

C) Watt

D) Kilogram**Correct Option: B****Explanation: The joule (J) is the SI unit for measuring energy.** - What is the derived unit for measuring frequency?

A) Hertz

B) Newton

C) Pascal

D) Ohm**Correct Option: A****Explanation: The hertz (Hz) is the derived unit for measuring frequency, representing one cycle per second.** - The SI unit of electric current is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: B****Explanation: The ampere (A) is the SI unit of electric current.** - What is the SI unit of power?

A) Watt

B) Joule

C) Newton

D) Pascal**Correct Option: A****Explanation: The watt (W) is the SI unit of power.** - The derived unit for measuring electric charge is:

A) Ampere

B) Coulomb

C) Volt

D) Ohm**Correct Option: B****Explanation: The coulomb (C) is the derived unit for measuring electric charge.** - If a car travels a distance of 200 meters in 20 seconds, what is its average speed?

A) 10 m/s

B) 20 m/s

C) 30 m/s

D) 40 m/s**Correct Option: A****Explanation: Average speed = Total distance / Total time = 200 m / 20 s = 10 m/s.** - The derived unit for measuring work and energy is:

A) Joule

B) Watt

C) Newton

D) Pascal**Correct Option: A****Explanation: The joule (J) is the derived unit for measuring work and energy.** - What is the SI unit of pressure?

A) Pascal

B) Newton

C) Watt

D) Joule**Correct Option: A****Explanation: The pascal (Pa) is the SI unit of pressure.** - If a force of 50 N is applied to an object and it moves a distance of 10 meters, what is the work done?

A) 5 J

B) 50 J

C) 500 J

D) 5000 J**Correct Option: C****Explanation: Work done = Force Ã— Distance = 50 N Ã— 10 m = 500 J.** - If an object moves with a constant speed of 5 m/s for 10 seconds, what is its total distance traveled?

A) 5 m

B) 10 m

C) 50 m

D) 100 m**Correct Option: C****Explanation: Total distance = Speed Ã— Time = 5 m/s Ã— 10 s = 50 m.** - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.** - Which of the following is a base unit for measuring length in the International System of Units?

A) Pascal

B) Newton

C) Meter

D) Joule**Correct Option: C****Explanation: The meter (m) is a base unit for measuring length in the SI system.** - The SI unit for measuring temperature is:

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is the SI unit for measuring temperature.** - If a force of 20 N is applied to an object and it moves a distance of 5 meters in the direction of the force, what is the work done?

A) 20 J

B) 40 J

C) 80 J

D) 100 J**Correct Option: B****Explanation: Work done = Force Ã— Distance = 20 N Ã— 5 m = 100 J.** - The derived unit for measuring electric power is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: C****Explanation: The watt (W) is the derived unit for measuring electric power.** - What is the SI unit of electric potential?

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: B****Explanation: The volt (V) is the SI unit of electric potential.** - Which of the following is a base unit for measuring temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is a base unit for measuring temperature in the SI system.** - The SI unit for measuring electrical current is:

A) Watt

B) Ampere

C) Coulomb

D) Ohm**Correct Option: B****Explanation: The ampere (A) is the SI unit for measuring electrical current.** - What is the derived unit for measuring electric potential difference?

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electric potential difference.** - If a force of 30 N is applied to an object and it moves a distance of 6 meters, what is the work done?

A) 180 J

B) 120 J

C) 90 J

D) 60 J**Correct Option: A****Explanation: Work done = Force Ã— Distance = 30 N Ã— 6 m = 180 J.** - The SI unit for measuring electric resistance is:

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: C****Explanation: The ohm ((\Omega)) is the SI unit for measuring electric resistance.** - What is the SI unit of power?

A) Newton

B) Joule

C) Watt

D) Pascal**Correct Option: C****Explanation: The watt (W) is the SI unit of power.** - If a car travels a distance of 100 kilometers in 2 hours, what is its average speed in m/s?

A) 13.9 m/s

B) 27.8 m/s

C) 38.9 m/s

D) 55.6 m/s**Correct Option: A****Explanation: Average speed = Total distance / Total time = (100 km Ã— 1000 m/km) / (2 hours Ã— 3600 s/hour) â‰ˆ 13.9 m/s.** - The derived unit for measuring electric charge is:

A) Ampere

B) Coulomb

C) Volt

D) Ohm**Correct Option: B****Explanation: The coulomb (C) is the derived unit for measuring electric charge.** - What is the SI unit of pressure?

A) Pascal

B) Newton

C) Watt

D) Joule**Correct Option: A****Explanation: The pascal (Pa) is the SI unit of pressure.** - If a force of 60 N is applied to an object and it moves a distance of 3 meters, what is the work done?

A) 180 J

B) 120 J

C) 90 J

D) 60 J**Correct Option: B****Explanation: Work done = Force Ã— Distance = 60 N Ã— 3 m = 180 J.** - If an object moves with a constant speed of 10 m/s for 5 seconds, what is its total distance traveled?

A) 5 m

B) 10 m

C) 50 m

D) 100 m**Correct Option: C****Explanation: Total distance = Speed Ã— Time = 10 m/s Ã— 5 s = 50 m.** - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.** - Which of the following is a base unit for measuring length in the International System of Units?

A) Pascal

B) Newton

C) Meter

D) Joule**Correct Option: C****Explanation: The meter (m) is a base unit for measuring length in the SI system.** - The SI unit for measuring temperature is:

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is the SI unit for measuring temperature.** - If a force of 25 N is applied to an object and it moves a distance of 4 meters in the direction of the force, what is the work done?

A) 29 J

B) 100 J

C) 96 J

D) 80 J**Correct Option: D****Explanation: Work done = Force Ã— Distance = 25 N Ã— 4 m = 100 J.** - The derived unit for measuring electric power is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: C****Explanation: The watt (W) is the derived unit for measuring electric power.** - What is the SI unit of electric potential?

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: B****Explanation: The volt (V) is the SI unit of electric potential.** - If an object moves with an acceleration of (3 m/s^2) for 6 seconds, starting from rest, what is its final velocity?

A) 6 m/s

B) 12 m/s

C) 18 m/s

D) 24 m/s**Correct Option: C****Explanation: Final velocity = Initial velocity + (Acceleration Ã— Time) = 0 + (3 Ã— 6) = 18 m/s.** - Which of the following is a base unit for measuring temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is a base unit for measuring temperature in the SI system.** - The SI unit for measuring electrical current is:

A) Watt

B) Ampere

C) Coulomb

D) Ohm**Correct Option: B****Explanation: The ampere (A) is the SI unit for measuring electrical current.** - What is the derived unit for measuring electric potential difference?

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electric potential difference.** - If a force of 40 N is applied to an object and it moves a distance of 5 meters, what is the work done?

A) 160 J

B) 200 J

C) 240 J

D) 300 J**Correct Option: C****Explanation: Work done = Force Ã— Distance = 40 N Ã— 5 m = 200 J.** - What is the SI unit of power?

A) Newton

B) Joule

C) Watt

D) Pascal**Correct Option: C****Explanation: The watt (W) is the SI unit of power.** - If a car travels a distance of 120 kilometers in 3 hours, what is its average speed in m/s?

A) 13.3 m/s

B) 26.7 m/s

C) 40 m/s

D) 60 m/s**Correct Option: B****Explanation: Average speed = Total distance / Total time = (120 km Ã— 1000 m/km) / (3 hours Ã— 3600 s/hour) â‰ˆ 26.7 m/s.** - The derived unit for measuring electric charge is:

A) Ampere

B) Coulomb

C) Volt

D) Ohm**Correct Option: B****Explanation: The coulomb (C) is the derived unit for measuring electric charge.** - What is the SI unit of pressure?

A) Pascal

B) Newton

C) Watt

D) Joule**Correct Option: A****Explanation: The pascal (Pa) is the SI unit of pressure.** - If a force of 70 N is applied to an object and it moves a distance of 7 meters, what is the work done?

A) 490 J

B) 560 J

C) 630 J

D) 700 J**Correct Option: D****Explanation: Work done = Force Ã— Distance = 70 N Ã— 7 m = 490 J.** - If an object moves with a constant speed of 15 m/s for 4 seconds, what is its total distance traveled?

A) 15 m

B) 30 m

C) 60 m

D) 90 m**Correct Option: C****Explanation: Total distance = Speed Ã— Time = 15 m/s Ã— 4 s = 60 m.** - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.** - Which of the following is a base unit for measuring length in the International System of Units?

A) Pascal

B) Newton

C) Meter

D) Joule**Correct Option: C****Explanation: The meter (m) is a base unit for measuring length in the SI system.** - The SI unit for measuring temperature is:

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is the SI unit for measuring temperature.** - If a force of 35 N is applied to an object and it moves a distance of 7 meters in the direction of the force, what is the work done?

A) 42 J

B) 150 J

C) 245 J

D) 350 J**Correct Option: D****Explanation: Work done = Force Ã— Distance = 35 N Ã— 7 m = 245 J.** - The derived unit for measuring electric power is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: C****Explanation: The watt (W) is the derived unit for measuring electric power.** - What is the SI unit of electric potential?

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: B****Explanation: The volt (V) is the SI unit of electric potential.** - If an object moves with an acceleration of (4 m/s^2) for 5 seconds, starting from rest, what is its final velocity?

A) 8 m/s

B) 12 m/s

C) 16 m/s

D) 20 m/s**Correct Option: C****Explanation: Final velocity = Initial velocity + (Acceleration Ã— Time) = 0 + (4 Ã— 5) = 20 m/s.** - Which of the following is a base unit for measuring temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is a base unit for measuring temperature in the SI system.** - The SI unit for measuring electrical current is:

A) Watt

B) Ampere

C) Coulomb

D) Ohm**Correct Option: B****Explanation: The ampere (A) is the SI unit for measuring electrical current.** - What is the derived unit for measuring electric potential difference?

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electric potential difference.** - If a force of 45 N is applied to an object and it moves a distance of 9 meters, what is the work done?

A) 54 J

B) 243 J

C) 405 J

D) 540 J**Correct Option: D****Explanation: Work done = Force Ã— Distance = 45 N Ã— 9 m = 405 J.** - Which of the following is a derived unit for measuring electrical resistance?

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: C****Explanation: The ohm ((\Omega)) is the derived unit for measuring electrical resistance.** - If an object moves with a constant speed of 20 m/s for 3 seconds, what is its total distance traveled?

A) 20 m

B) 40 m

C) 60 m

D) 80 m**Correct Option: C****Explanation: Total distance = Speed Ã— Time = 20 m/s Ã— 3 s = 60 m.** - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.** - If an object has a mass of 5 kg and its acceleration is (6 m/s^2), what force is exerted on it?

A) 11 N

B) 25 N

C) 30 N

D) 36 N**Correct Option: D****Explanation: Using the formula (F = ma), where (F) is the force, (m) is the mass, and (a) is the acceleration, we get (F = 5 times 6 = 30 N).** - Which of the following is a base unit for measuring length in the International System of Units?

A) Pascal

B) Newton

C) Meter

D) Joule**Correct Option: C****Explanation: The meter (m) is a base unit for measuring length in the SI system.** - The SI unit for measuring temperature is:

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is the SI unit for measuring temperature.** - If a force of 55 N is applied to an object and it moves a distance of 11 meters in the direction of the force, what is the work done?

A) 121 J

B) 500 J

C) 605 J

D) 660 J**Correct Option: C****Explanation: Work done = Force Ã— Distance = 55 N Ã— 11 m = 605 J.** - The derived unit for measuring electric power is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: C****Explanation: The watt (W) is the derived unit for measuring electric power.** - What is the SI unit of electric potential?

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: B****Explanation: The volt (V) is the SI unit of electric potential.** - If an object moves with an acceleration of (7 m/s^2) for 4 seconds, starting from rest, what is its final velocity?

A) 14 m/s

B) 21 m/s

C) 28 m/s

D) 35 m/s**Correct Option: D****Explanation: Final velocity = Initial velocity + (Acceleration Ã— Time) = 0 + (7 Ã— 4) = 28 m/s.** - Which of the following is a base unit for measuring temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is a base unit for measuring temperature in the SI system.** - The SI unit for measuring electrical current is:

A) Watt

B) Ampere

C) Coulomb

D) Ohm**Correct Option: B****Explanation: The ampere (A) is the SI unit for measuring electrical current.** - What is the derived unit for measuring electric potential difference?

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electric potential difference.** - If a force of 65 N is applied to an object and it moves a distance of 13 meters, what is the work done?

A) 130 J

B) 650 J

C) 845 J

D) 8450 J**Correct Option: B****Explanation: Work done = Force Ã— Distance = 65 N Ã— 13 m = 845 J.** - If an object moves with a constant speed of 25 m/s for 2 seconds, what is its total distance traveled?

A) 25 m

B) 50 m

C) 100 m

D) 200 m**Correct Option: C****Explanation: Total distance = Speed Ã— Time = 25 m/s Ã— 2 s = 50 m.** - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.** - If an object has a mass of 6 kg and its acceleration is (8 m/s^2), what force is exerted on it?

A) 14 N

B) 24 N

C) 30 N

D) 48 N**Correct Option: D****Explanation: Using the formula (F = ma), where (F) is the force, (m) is the mass, and (a) is the acceleration, we get (F = 6 times 8 = 48 N).** - Which of the following is a base unit for measuring length in the International System of Units?

A) Pascal

B) Newton

C) Meter

D) Joule**Correct Option: C****Explanation: The meter (m) is a base unit for measuring length in the SI system.** - The SI unit for measuring temperature is:

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is the SI unit for measuring temperature.** - If a force of 75 N is applied to an object and it moves a distance of 15 meters in the direction of the force, what is the work done?

A) 112 J

B) 625 J

C) 900 J

D) 1125 J**Correct Option: C****Explanation: Work done = Force Ã— Distance = 75 N Ã— 15 m = 1125 J.** - The derived unit for measuring electric power is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: C****Explanation: The watt (W) is the derived unit for measuring electric power.** - What is the SI unit of electric potential?

A) Ampere

B) Volt

C) Ohm

D) Coulomb**Correct Option: B****Explanation: The volt (V) is the SI unit of electric potential.** - If an object moves with an acceleration of (9 m/s^2) for 3 seconds, starting from rest, what is its final velocity?

A) 9 m/s

B) 18 m/s

C) 27 m/s

D) 36 m/s**Correct Option: C****Explanation: Final velocity = Initial velocity + (Acceleration Ã— Time) = 0 + (9 Ã— 3) = 27 m/s.** - Which of the following is a base unit for measuring temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is a base unit for measuring temperature in the SI system.** - The SI unit for measuring electrical current is:

A) Watt

B) Ampere

C) Coulomb

D) Ohm**Correct Option: B****Explanation: The ampere (A) is the SI unit for measuring electrical current.** - What is the derived unit for measuring electric potential difference?

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electric potential difference.** - If a force of 80 N is applied to an object and it moves a distance of 16 meters, what is the work done?

A) 128 J

B) 800 J

C) 1280 J

D) 1600 J**Correct Option: D****Explanation: Work done = Force Ã— Distance = 80 N Ã— 16 m = 1280 J.** - If an object moves with a constant speed of 30 m/s for 2 seconds, what is its total distance traveled?

A) 30 m

B) 60 m

C) 90 m

D) 120 m**Correct Option: B**

Explanation: Total distance = Speed Ã— Time = 30 m/s Ã— 2 s = 60 m. - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.** - If an object has a mass of 7 kg and its acceleration is (10 m/s^2), what force is exerted on it?

A) 17 N

B) 70 N

C) 70 m/s(^2)

D) 100 N**Correct Option: D****Explanation: Using the formula (F = ma), where (F) is the force, (m) is the mass, and (a) is the acceleration, we get (F = 7 times 10 = 70 N).** - Which of the following is a base unit for measuring length in the International System of Units?

A) Pascal

B) Newton

C) Meter

D) Joule**Correct Option: C****Explanation: The meter (m) is a base unit for measuring length in the SI system.** - The SI unit for measuring temperature is:

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule**Correct Option: A****Explanation: The kelvin (K) is the SI unit for measuring temperature.** - If a force of 85 N is applied to an object and it moves a distance of 17 meters in the direction of the force, what is the work done?

A) 289 J

B) 925 J

C) 1445 J

D) 14450 J**Correct Option: C****Explanation: Work done = Force Ã— Distance = 85 N Ã— 17 m = 1445 J.** - The derived unit for measuring electric power is:

A) Volt

B) Ampere

C) Watt

D) Ohm**Correct Option: C****Explanation: The watt (W) is the derived unit for measuring electric power.** - What is the SI unit of pressure?

A) Pascal

B) Newton

C) Watt

D) Joule**Correct Option: A****Explanation: The pascal (Pa) is the SI unit of pressure.** - If a force of 90 N is applied to an object and it moves a distance of 18 meters, what is the work done?

A) 180 J

B) 720 J

C) 1620 J

D) 16200 J**Correct Option: C****Explanation: Work done = Force Ã— Distance = 90 N Ã— 18 m = 1620 J.** - The derived unit for measuring electrical potential difference is:

A) Watt

B) Ampere

C) Volt

D) Ohm**Correct Option: C****Explanation: The volt (V) is the derived unit for measuring electrical potential difference.** - What is the SI unit of frequency?

A) Newton

B) Hertz

C) Joule

D) Watt**Correct Option: B****Explanation: The hertz (Hz) is the SI unit of frequency.**

## Chapter 1 Physical Quantities Topic-wise MCQs

Topic |
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Based Quantities & Derived Quantities MCQs |

Prefixes MCQs |

Scientific Notation MCQs |

Measuring Instruments MCQs |

Significant Figures MCQs |

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