Physics Set 14 FAQs

1. In the displacement equation x = A cos(ωt + φ), the phase constant is:

2. A convex mirror has a radius of curvature of 24 cm. Using the New Cartesian Sign Convention, its focal length is:

3. A ray of light falls on a plane mirror at an angle of incidence of 35°. The angle between the reflected ray and the mirror surface is:

4. The range of a typical laboratory thermometer is:

5. The Himalayan Chandra Telescope at Hanle is named after:

6. The sidereal year is longer than the tropical year by about:

7. Mercury in a glass capillary tube stands:

8. One ampere is equal to:

9. 1 inch is equal to:

10. The shell with the least energy is:

11. The gravitational force on an object of mass 20 kg (g = 9.8 m s⁻²) is:

12. One coulomb is equivalent to the charge contained in nearly:

13. Cathode rays consist of:

14. In a Light Emitting Diode (LED), the longer wire is the:

15. The main mirror of most modern reflecting telescopes is a large:

16. Ernest Rutherford won the 1908 Nobel Prize in:

17. Which of the following quantities has no direction?

18. A boy stands 2.5 m in front of a plane mirror. The distance between the boy and his image is:

19. The Sun's apparent northward movement from December to June is called:

20. Nichrome is an alloy of:

21. Power is defined as the:

22. In a thundercloud, the upper part is occupied by:

23. Consider the following statements about cathode rays: (I) In the absence of electric or magnetic field, they travel in straight lines. (II) Their characteristics do not depend on the material of the electrodes. (III) Their characteristics depend on the nature of the gas in the tube. Which of the above is/are correct?

24. The wavelength range of UV rays is:

25. The core of an electromagnet is made of:

26. The mechanical advantage of a lever is equal to:

27. The law stating that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant, for light of a given colour and a given pair of media, is known as:

28. The charge to mass ratio of the electron was first measured in 1897 by:

29. In the Northern Hemisphere, the autumn equinox falls around:

30. Mercury thermometers are being replaced by digital thermometers because mercury is: