Physics Set 6 FAQs

1. The area under a force-displacement graph between the initial and final positions gives the:

2. A parallel beam of light after reflection from a convex mirror:

3. A straight inclined line on a position-time graph indicates:

4. The albedo of snow lies approximately in the range:

5. In 1820, the deflection of a compass needle by an electric current in a nearby wire was accidentally observed by:

6. The period of SHM is independent of its:

7. The kinetic energy of a particle in SHM of period T varies with a period of:

8. The largest reservoir of nitrogen is the:

9. The working of a fuse is based on:

10. Energy is defined as the:

11. A simple pendulum eventually stops because of energy loss due to:

12. Because of atmospheric refraction, the Sun is visible about ___ before the actual sunrise.

13. Consider the following pairs: (I) Kilogram – Planck constant (II) Kelvin – Boltzmann constant (III) Mole – Elementary charge Which of the pairs given above is/are correctly matched?

14. The energy stored by an object due to its deformation, or in a system of objects due to their relative positions, is called:

15. The metal cap of an electric cell is its:

16. The father of the Indian nuclear programme is:

17. A block of mass m is attached to two identical springs of spring constant k on either side, fixed to rigid supports. The time period of its oscillations is:

18. The base units of length, mass and time in the FPS system are respectively:

19. A body cools from 90 °C to 80 °C in 5 min when the surroundings are at 30 °C. The time taken to cool from 60 °C to 50 °C is:

20. In steady-state conduction through a bar, the rate of heat flow is inversely proportional to the:

21. The liquid in which the electrodes of a Voltaic cell are partly dipped is called:

22. The pendulum clock was invented in the year:

23. Which of the following festivals follows a solar sidereal calendar?

24. When detergent is dissolved in water, its angle of contact with fibres:

25. Surface tension is numerically equal to:

26. The periodic to and fro motion of an object about its mean position is called:

27. The number of significant figures in 4500 m (written without a decimal point) is:

28. A change in pressure applied to an enclosed fluid is transmitted undiminished to every point of the fluid and the walls of its container. This is known as:

29. The time period of a satellite orbiting very close to the surface of the Earth is approximately:

30. The vessel and stirrer of a calorimeter are made of a metal such as: