Sets
Physics Set 8
30 questions 1. After one complete revolution on a circular path of radius R, the displacement is:
2. Consider the following statements about shadows:
(I) Opaque objects form darker shadows.
(II) Translucent objects form lighter shadows.
(III) Changing the colour of an opaque object changes the colour of its shadow.
Which of the above is/are correct?
3. If the resistance of a conductor is doubled while the potential difference across it is unchanged, the current through it:
4. A ray of light travelling obliquely from a rarer medium into a denser medium:
5. The Kodaikanal Solar Observatory was established in:
6. The Himalayan glaciers and polar ice caps belong to the:
7. The emissivity of a perfect radiator is:
8. Thomson's model of the atom is also called the:
9. A block of mass 0.5 kg attached to a spring of constant 200 N m⁻¹ oscillates on a frictionless surface. Its time period is approximately:
10. All isotopes of an element show the same chemical behaviour because they have the same number of:
11. For a satellite in a circular orbit, the ratio of its kinetic energy to the magnitude of its potential energy is:
12. The notation K, L, M, N for shells originated from the X-ray experiments of:
13. The charge possessed by an electron is:
14. The number of constellations officially listed by the International Astronomical Union is:
15. The SI unit of force is:
16. A net force of 30 N acts on an object of mass 6 kg initially at rest. Its acceleration is:
17. The gauge pressure at a depth of 5.0 m in water (density 1000 kg m⁻³, g = 10 m s⁻²) is:
18. The identity of an element is determined by its:
19. The magnetic field pattern around a current-carrying solenoid is similar to that of a:
20. Water flows out of a small hole in the side of an open tank, 1.8 m below the water surface. The speed of efflux (g = 10 m s⁻²) is: