Objective Question Papers
Chapter 10: Wave Optics
Que 1: What happens if one of the slits, say S1 in Young’s double slit experiment, is covered with a glass plate which absorbs half the intensity of light from it?
Que 2: What happens to the interference pattern if the two slits S1 and S2 in Young’s double slit experiment are illuminated by two independent but identical sources?
Que 3: What is the reason for your answer to the above question?
Que 4: A single slit diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light?
Que 5: When a polaroid is rotated, the intensity of light varies but never reduces to zero. It shows that the incident light is:
Que 6: When a polaroid is rotated, the intensity of light does not vary. The incident light may be:
Que 7: In Young’s double slit experiment, a maximum is obtained when the path difference between the interfering waves is (n ∈ l):
Que 8: For sustained interference, we need two sources which emit radiations:
Que 9: Two sources of light are said to be coherent when both give out light waves of the same:
Que 10: The intensity of light emerging from the two slits, in Young’s experiment is in the ratio 1:4. The ratio of the intensity of the minimum to that of the consecutive maximum will be:
Que 11: Poisson’s bright spot was discovered by:
Que 12: The theory of expanding universe is confirmed by the observation of the spectral lines of the star, which shows:
Que 13: The applications of Doppler effect are:
Que 14: Which of the following is conserved when light waves interfere?
Que 15: In Young’s double slit experiment, a minimum is obtained when the phase difference of the superposing waves is (n ∈ l):
Que 16: The angle of minimum deviation of a prism depends upon the angle of:
Que 17: The minimum value of the refractive index is:
Que 18: Polarization of light proves the:
Que 19: Out of the following statements, which is not correct?
Que 20: Polaroid glasses are used in sun glasses because:
Que 21: In vacuum, the speed of light depends upon:
Que 22: The fringe width (β) of a diffraction pattern and the slit width (d) are related as:
Que 23: C.V. Raman was awarded the Nobel prize for his work associated with which of the following phenomena of radiations?
Que 24: Light takes 10^-10 seconds to cross a glass slab. What is the thickness of the glass slab?
Que 25: In Young’s double slit experiment, the central point on the screen is:
