Polarization (Plane-Polarized Light: Brewster's Law, Uses of Plane-Polarized Light and Polaroid) NEET Questions

Physics - Optics

Polarization (Plane-Polarized Light: Brewster's Law, Uses of Plane-Polarized Light and Polaroid) MCQ Questions


7.
If the polarizing angle for a medium is 60Ā°, the refractive index of the medium is:
A.
1/āˆš3
B.
āˆš2
C.
āˆš3
D.
2
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ANSWER :
C. āˆš3
8.
Brewster's angle depends on which of the following?
A.
Only the intensity of incident light
B.
Polarization of incident light
C.
Wavelength of light and refractive index of the medium
D.
Only the angle of incidence
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ANSWER :
C. Wavelength of light and refractive index of the medium
9.
When light travels from a denser medium to a rarer medium, the Brewster's angle:
A.
Is smaller than that for the reverse direction
B.
Remains the same
C.
Is larger than that for the reverse direction
D.
Becomes 90Ā°
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ANSWER :
A. Is smaller than that for the reverse direction
10.
Brewster's law was discovered in the year:
A.
1850
B.
1678
C.
1811
D.
1801
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ANSWER :
C. 1811
11.
If the angle of incidence equals the Brewster's angle, the angle of refraction is:
A.
90Ā° + iā‚š
B.
iā‚š
C.
2iā‚š
D.
90Ā° āˆ’ iā‚š
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ANSWER :
D. 90Ā° āˆ’ iā‚š
12.
For a glass-air interface, the Brewster's angle is approximately 57Ā°. If light is incident at this angle, the polarization of reflected light is:
A.
Elliptically polarized
B.
Circularly polarized
C.
Linearly polarized in the plane of incidence
D.
Linearly polarized perpendicular to the plane of incidence
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ANSWER :
D. Linearly polarized perpendicular to the plane of incidence