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


13.
In a prism, the deviation δ at each surface is:
A.
δ₁ - δ₂ = 0
B.
Both equal A
C.
δ₁ = i₁ - r₁ at first surface; δ₂ = i₂ - r₂ at second surface
D.
δ₁ = δ₂
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ANSWER :
C. δ₁ = i₁ - r₁ at first surface; δ₂ = i₂ - r₂ at second surface
14.
Total deviation through the prism is:
A.
δ = δ₁ - δ₂
B.
δ = i₁ + r₁
C.
δ = δ₁ × δ₂
D.
δ = δ₁ + δ₂ = (i₁ - r₁) + (i₂ - r₂) = i₁ + i₂ - A
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ANSWER :
D. δ = δ₁ + δ₂ = (i₁ - r₁) + (i₂ - r₂) = i₁ + i₂ - A
15.
The fundamental prism formula is:
A.
δ = i₁ + i₂ - A
B.
δ = i₁ × i₂
C.
δ = A - (i₁ + i₂)
D.
δ = i₁ - i₂
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ANSWER :
A. δ = i₁ + i₂ - A
16.
For a prism of angle A = 60°, if i₁ = 40° and i₂ = 50°, the deviation is:
A.
10°
B.
30°
C.
90°
D.
60°
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ANSWER :
B. 30°
17.
If i₁ = 50° and i₂ = 70° in a 60° prism, the deviation is:
A.
30°
B.
10°
C.
120°
D.
60°
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ANSWER :
D. 60°
18.
If A = 30° and i₁ = 35°, i₂ = 25°, the deviation is:
A.
60°
B.
10°
C.
30°
D.
5°
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ANSWER :
C. 30°