Physics · Chapter 1 of 11

Units: BPSC & UPPCS Prelims PYQs

12 previous-year questions on Units. Each one opens to its answer and explanation.

1. 1. 71st BPSC Prelims 2025

   Energy consumed in a home is 250 units then the total energy in Joule will be:

   1. A8 × 10⁶
   2. B9 × 10⁵
   3. C9 × 10⁸
   4. D10⁵
   Answer and explanation →

2. 2. 70th BPSC Prelims 2024

   The meter that is used to measure the distance moved by the vehicle is known as:

   1. AAmmeter
   2. BSpeedometer
   3. CChronometer
   4. DOdometer
   Answer and explanation →

3. 3. 67th BPSC Prelims 2022

   Which of the following is not a vector quantity?

   1. AVelocity
   2. BTorque
   3. CDisplacement
   4. DSpeed
   5. ENone of the above/More than one of the above
   Answer and explanation →

4. 4. UPPSC Prelims 2022

   Which of the following pairs is NOT correctly matched? [Quantity – S.I. Unit]

   • (a) Activity of radio-active substance – Curie
   • (b) Power of lens – Diopter
   • (c) Heat – Joule
   • (d) Pressure – Pascal
   1. A(a)
   2. B(b)
   3. C(c)
   4. D(d)
   Answer and explanation →

5. 5. 66th BPSC Prelims 2020

   'Light-year' is a unit of

   1. Atime
   2. Bspeed
   3. Cdistance
   4. Dintensity of light
   5. ENone of the above / More than one of the above
   Answer and explanation →

6. 6. 65th BPSC Prelims 2019

   The unit of pressure is

   1. Akg / cm²
   2. Bkg / cm
   3. Ckg / mm
   4. Dkg / cm³
   5. ENone of the above / More than one of the above
   Answer and explanation →

7. 7. 65th BPSC Prelims 2019

   Which one of the following is a scalar quantity?

   1. AForce
   2. BPressure
   3. CVelocity
   4. DAcceleration
   5. ENone of the above / More than one of the above
   Answer and explanation →

8. 8. UPPSC Prelims 2015

   'Pyrheliometer' is used for measuring?

   1. ASun spots
   2. BSolar radiation
   3. CAir temperature
   4. DTemperature of plants
   Answer and explanation →

9. 9. 45th BPSC Prelims 2001

   Who invented aeroplane?

   1. AWright Brothers
   2. BJames Watt
   3. CHumphrey Davy
   4. DVon Braun
   Answer and explanation →

10. 10. 45th BPSC Prelims 2001

    Which physical quantity is represented by the ratio of momentum and velocity of the body?

    1. AVelocity
    2. BAcceleration
    3. CMass
    4. DForce
    Answer and explanation →

11. 11. 45th BPSC Prelims 2001

    Which of the following quantities is not a vector?

    1. ADisplacement
    2. BVelocity
    3. CForce
    4. DVolume
    Answer and explanation →

12. 12. 45th BPSC Prelims 2001

    A distance of 1 km means

    1. A100 m
    2. B1000 cm
    3. C1000 m
    4. D100 cm
    Answer and explanation →