Test: Refraction through a Prism (NCERT) - NEET MCQ

# Test: Refraction through a Prism (NCERT) - NEET MCQ

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## 5 Questions MCQ Test NCERTs at Fingertips: Textbooks, Tests & Solutions - Test: Refraction through a Prism (NCERT)

Test: Refraction through a Prism (NCERT) for NEET 2024 is part of NCERTs at Fingertips: Textbooks, Tests & Solutions preparation. The Test: Refraction through a Prism (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Refraction through a Prism (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Refraction through a Prism (NCERT) below.
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Test: Refraction through a Prism (NCERT) - Question 1

### Two beams of red and violet colours are made to pass separately through a prism (angle of the prism is 60o). In the position of minimum deviation, the angle of refraction will be:

Detailed Solution for Test: Refraction through a Prism (NCERT) - Question 1

During minimum deviation,
r1 = r2 = A/2 = 60°/2 = 30∘ (∵ A = 60°)
Also, the angle of refraction does not depend on the color of beams of light.

Test: Refraction through a Prism (NCERT) - Question 2

### A ray of light passes through an equilateral prism (refractive index 1.5) such that angle of incidence is equal to angle of emergence and the latter is equal to 3/4th of the angle of prism. The angle of deviation is

Detailed Solution for Test: Refraction through a Prism (NCERT) - Question 2

Here, A = 60, μ = 1.5,

A + δ = i + e
∴ 60 + δ = 45 + 45⇒ δ = 90 − 60 = 30.

Test: Refraction through a Prism (NCERT) - Question 3

### A ray is incident at an angle of incidence i on one surface of prism of small angle A and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ, the angle of incidence is nearly equal to

Detailed Solution for Test: Refraction through a Prism (NCERT) - Question 3

As refracted ray emerges normally from opposite surface, r2 = 0
As A = r1 + r2  ∴ r1 = A

Test: Refraction through a Prism (NCERT) - Question 4

The angle of minimum deviation for prism of angle π/3 is π/6, if the velocity of light in vacuum is 3 × 108 ms−1, then the velocity of light in material of the prism is

Detailed Solution for Test: Refraction through a Prism (NCERT) - Question 4

or v = 2.12 × 108 m s−1

Test: Refraction through a Prism (NCERT) - Question 5

For a glass prism (μ = √3) the angle of minimum deviation is equal to the angle of the prism. The angle of the prism is

Detailed Solution for Test: Refraction through a Prism (NCERT) - Question 5

According to question, δm = A

⇒ A/2 = 30∘ ⇒ A = 60

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