Page 2 - HA-refraction through prism
P. 2
Q6: When white light passes through the achromatic combination of prism, then what is
observed
a. Dispersion
b. Deviation
c. Dispersion and deviation
d. None of the above
Answer: (b) Deviation
Q7: For a wavelength l the dispersion of the medium is D, then the dispersion for the
wavelength 2l will be
a. D/8
b. D/2
c. 2D
d. D
Answer: (a) D/8
Q8: The refractive angle of a prism for a monochromatic light is 60 and refractive
0
index is √2. For minimum deviation, the angle of incidence will be
a. 60
0
b. 45
0
c. 30
0
d. 75
0
Answer: (b) 45
0
Q9: The dispersive power will be maximum for
a. Flint glass
b. Crown glass
c. Mixture of glass
d. None of these
Answer: (a) Flint glass
Q10: When white light is passed through a hollow prism then there is
a. no dispersion and no deviation
b. Only dispersion
c. Only deviation
d. Both dispersion and deviation
Answer: (a) no dispersion and no deviation
Subjective Questions:
