Quiz question answer
11. Which of the following phenomenon is not explained by Huygens’ construction of wave front?
a. Diffraction
b. Origin of spectra
c. Refraction
d. Reflection
Ans . (b) origin of spectra
12. Which one proves transverse nature of waves?
a. Interference
b. Diffraction
c. Polarization
d. All of these
Ans c Polarization
13. Polarised light can be produced by
a. Dispersion
b. Scattering
c. Interference
d. Diffraction
Ans. B scattering
14. At a polarizing angle , the angle between reflected and refracted rays is
a. 0
b. 90
c. 180
d. 60
Ans b 90
15. Sir C.V. Raman received Nobel Prize for which of the following phenomenon
a. Theory of relativity
b. Law of gravitation
c. Neutron
d. Elastic scattering of light by molecules
Ans d Elastic scattering of light by molecules
16. Refractive index of a material is equal to tangent of polarizing angle. It is called
e. Brewester law
f. Lambert law
g. Malus law
h. Braggs law
Ans. A brewester law
17. Direct current (dc) can be easily passed through
a. capacitor
b. inductor
c. both
d. none of the above
ans b inductor
18. Which part of electromagnetic spectrum has largest penetrating power
a. visible rays
b. gamma rays
c. microwaves
d. infrared rays
ans b gamma rays
19. How does the frequency of light changes when it goes from air into glass
e. Increases
f. No effect
g. Become four times
h. Decreases
Ans b no effect
20. Interference occurs in which of the following waves?
e. Longitudinal
f. Transverse
g. Electromagnetic
h. All of these
Ans d all of these
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