Sets
Physics Set 17
30 questions 1. Which of the following requires both magnitude and direction for its description?
2. Neutron-scattering experiments using the Dhruva reactor are carried out at the:
3. Magnets that occur naturally and were discovered in ancient times are called:
4. The number of plane mirror strips joined together in a kaleidoscope is:
5. An astronaut in an orbiting satellite experiences weightlessness because:
6. The matsya-yantra, a magnetised fish-shaped iron piece kept in a vessel of oil, was used by Indians for:
7. The energy emitted per unit time by a perfect radiator is proportional to:
8. A ray of light passing through the optical centre of a lens:
9. Light emitted by the Sun takes about ___ to reach the Earth.
10. For a sound wave in air, if the frequency of the source is doubled, the speed of the wave:
11. Which of the following shines with its own light?
12. Nearly all weather phenomena take place in the:
13. The moment of inertia of a simple pendulum of bob mass m and length L about the support is:
14. Which of the following substances has the highest boiling point at 1 atm pressure?
15. The angle of contact of mercury with glass is:
16. The direction of a magnetic field is taken to be the direction in which a ___ moves inside it:
17. Anna Mani, an Indian scientist who built many weather measurement instruments, is also known as the:
18. The blackbody radiation curves depend only on the:
19. The energy stored in the nuclei of atoms is:
20. Atoms with a complete octet in their valence shell are: