Science

Physics TOP 30 MCQs for all exams questions and answers

11. If the temperature of a place increases suddenly, the relative humidity

a) Increases

b) Decreases

c) Remains constant

d) Fluctuates

12. Fleming’s right hand rule is used to find the direction of the

a) Alternate current

b) Direct current

c) Induced current

d) Actual current

13. What is the full form of ‘AM’ regarding radio broadcasting?

a) Amplitude Movement

b) Anywhere Movement

c) Amplitude Matching

d) Amplitude Modulation

14. Which colour is the complementary colour of yellow ?

a) Blue 

b) Green

c) Orange

d) Red

15. During washing of clothes, we use indigo due to its

a) better cleaning action

b) proper pigmental composition

c) high glorious nature

d) very low cost

16. The energy stored in a watch spring is

a) kinetic energy

b) potential energy

c) heat energy

d) chemical energy

17. The sensation of weightlessness in a spacecraft in an orbit is due to the

a) absence of gravity outside

b) acceleration in the orbit which is equal to the acceleration due to gravity outside

c) presence of gravity outside but not inside the spacecraft

d) fact that spacecraft in the orbit has no energy

18. ‘Therm’ is the unit of

a) power

b) heat

c) light

d) distance

19. Newton’s first law of motion gives the concept of

a) energy

b) work

c) momentum

d) inertia

20. A pond of water appears less deep due to

a) reflection

b) diffraction

c) refraction 

d) polarization

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