# Online Physics MCQs Test Set 1

Multiple choice questions (MCQ) related to higher physics (B.Sc. + M.Sc.). The first law of Thermodynamics is based on (A) Conservation of energy (B)

The following (Multiple Choice Questions-1) provides multiple choice questions (MCQ) related to higher physics (B.Sc. + M.Sc.). You need to read all the answers given and click on the correct answer. If you are not sure about the answer, you can check the answer using the 'Show Answer' button. Thankyou! best of luck.

1. The first law of Thermodynamics is based on :

The first law of thermodynamics is based on conservation of energy.

2. The process, in which there is no exchange of heat is called :

The process, in which there is no exchange of heat is called adiabatic process.

3. The internal energy of an ideal gas depends upon :

The internal energy of an ideal gas depends upon temperature only.

4. In an isothermal expansion, the internal energy of an ideal gas

In an isothermal expansion the internal energy of an ideal gas remains constant.

5. The efficiency of carnot engine working between ice point and steam point will be

ice point=0ᵒC=273K and steam point=100ᵒC=373K

6. When heat is added to a system, its entropy

When heat is added to a system, its entropy increases.

7. By increasing pressure, the melting point of ice

By increasing pressure the melting point of ice decreases.

8. In which process, heat transmission is fastest

Heat transmission is fastest in radiation process.

9. Wein's radiation law holds for :

Wein's radiation law holds for smaller wavelength.

10. Planck's law of radiation holds for :

Planck's law of radiation holds for all wavelength.

11. Rayleigh Jean's law holds for :

Rayleigh Jean's law holds for longer wavelength.

12. Rice takes longest time to cook :

At the mount, boiling point of water decreases due to decrease in pressure.

13. If a unit charge is taken from one point to another over an equipotential surface, then

At equipotential surgace, all points have equal voltage so, work done will be zero.

14. Two parallel wires carrying currents in opposite directions

Two parallel wires carrying currents in opposite directions repel each other.

15. The conductivity of an ideal dielectric is

The conductivity of an ideal dielectric is zero.

16. In a non uniform field, if a substance tends to move from the stronger to weaker parts of the field, then it is

In a non uniform field, if a substance tends to move from the stronger to weaker parts of the field, then it is diamagnetic.

17. The electric current in a metallic conductor is due to the flow of

The electric current in a metallic conductor is due to the flow of free electrons only.

18. The specific resistance of a wire depends upon

The specific resistance of a wire depends upon its material.

19. The resistance of a wire is doubled if

The resistance of a wire is doubled if its radius is halved and length is doubled.

20. A transformer converts

A transformer converts low AC voltage into high AC voltage and vice versa.

21. Electric dipole moment of a non-polar molecule is

Electric dipole moment of a non-polar molecule is zero.

22. Which of the following does not change with temperature?

NA

23. Which of the following is not related with resonance?

NA

24. How is ammeter connected in electric circuit?

NA

25. If the length of a simple pendulum is halved then its period of oscillation is