The Plot of the Angle of Deviation Vs Angle of Incidence for a Triangular Prism NEET Questions

Physics - Experimental Skills

The Plot of the Angle of Deviation Vs Angle of Incidence for a Triangular Prism MCQ Questions


7.
The angle of deviation depends on:
A.
Wavelength of light
B.
Refractive index of the prism
C.
Angle of incidence
D.
All of these
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ANSWER :
D. All of these
8.
For a given prism, the minimum deviation occurs at:
A.
Smallest angle of incidence
B.
When the refracted ray inside the prism is parallel to the base
C.
Largest angle of incidence
D.
When the emergent ray is normal to the prism face
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ANSWER :
B. When the refracted ray inside the prism is parallel to the base
9.
When the angle of incidence is increased, the angle of deviation:
A.
Increases continuously
B.
First decreases, then increases
C.
Remains constant
D.
Decreases continuously
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ANSWER :
B. First decreases, then increases
10.
The minimum deviation occurs when the incident and emergent angles are:
A.
Equal
B.
Different
C.
Zero
D.
Maximum
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ANSWER :
A. Equal
11.
The refractive index of the prism can be determined using the relation:
A.
n = sin(A + δmin) / sin A
B.
n = sin(A/2) / sin(δmin/2)
C.
n = sin(A) / sin(δmin)
D.
n = sin(δmin) / sin(A/2)
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ANSWER :
B. n = sin(A/2) / sin(δmin/2)
12.
The prism formula for minimum deviation is:
A.
n = sin(A + δ) / sin A
B.
n = sin(A/2) / sin(δmin/2)
C.
n = tan A / tan δmin
D.
n = cos(A/2) / cos(δmin/2)
😑 View Answer Rough Work Error
ANSWER :
B. n = sin(A/2) / sin(δmin/2)