Sets
Physics Set 12
30 questions 1. The escape speed from the surface of the Earth is approximately:
2. Consider the following statements about a uniform metallic conductor:
(I) Its resistance is directly proportional to its length.
(II) Its resistance is inversely proportional to its area of cross-section.
(III) Its resistance does not depend on the nature of its material.
Which of the above is/are correct?
3. On a balanced seesaw, a 20 kg child sits 1.5 m from the fulcrum. A 30 kg child on the other side must sit at a distance of:
4. The suggestion that a magnet exerts an equal and opposite force on a current-carrying conductor was made by:
5. Friction arises mainly due to:
6. The normal temperature of a healthy human adult is taken to be:
7. For a ray of light passing through a rectangular glass slab, the emergent ray is:
8. The sound energy passing per unit time through a unit area perpendicular to the direction of propagation is called:
9. Consider the following statements:
(I) In a series combination, the total potential difference equals the sum of the potential differences across the individual resistors.
(II) In a parallel combination, the total current equals the sum of the currents through the separate branches.
(III) In a parallel combination, the potential difference across each resistor is different.
Which of the above is/are correct?
10. The Big Dipper lies in the constellation:
11. In a transverse wave, the particles of the medium vibrate:
12. The Swiss physicist Daniel Bernoulli developed his relation in the year:
13. Consider the following pairs:
(I) Venus – Evening Star
(II) Mars – Red Planet
(III) Mercury – Blue Planet
Which of the pairs given above is/are correctly matched?
14. Humans perceive the amplitude of a sound wave as:
15. The Voltaic cell is also known as the:
16. The excess of pressure at a point inside a liquid over atmospheric pressure is called:
17. The resistivity of an alloy, compared to that of its constituent metals, is generally:
18. A straight-line velocity-time graph parallel to the time axis indicates:
19. According to the law of areas, a planet moves slowest when it is:
20. The smallest interval of time after which a periodic motion is repeated is called its: