The refractive index of the material of a prism is and the angle of the prism is \(30^\circ.\) One of the two refracting surfaces of the prism is made a mirror inwards with a silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if the angle of incidence on the prism is:
1. \(60^\circ\)
2. \(45^\circ\)
3. \(30^\circ\)
4. zero

Subtopic:  Prisms |
 71%
From NCERT
NEET - 2018
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A thin prism having refracting angle \(10^\circ\) is made of glass of a refractive index \(1.42\). This prism is combined with another thin prism of glass with a refractive index \(1.7\). This combination produces dispersion without deviation. The refracting angle of the second prism should be:
1. \(6^{\circ}\)
2. \(8^{\circ}\)
3. \(10^{\circ}\)
4. \(4^{\circ}\)

Subtopic:  Prisms |
 66%
From NCERT
NEET - 2017
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The angle of incidence for a ray of light at a refracting surface of a prism is 45°. The angle of prism is 60°. If the ray suffers minimum deviation through the prism, the angle of deviation and refracting index of the material of the prism respectively are

(a)30°,2

(b)45°,2

(c)30°,12

(d)45°,12

Subtopic:  Prisms |
 71%
From NCERT
NEET - 2016
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NEET 2023 - Target Batch - Aryan Raj Singh

The angle of incidence for a ray of light at a refracting surface of a prism is \(45^{\circ}\). The angle of the prism is \(60^{\circ}\). If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:

1. \(45^{0},~\sqrt{2}\) 2. \(30^{0},~\sqrt{2}\)
3. \(30^{0},~\frac{1}{\sqrt{2}}\) 4. \(45^{0},~\frac{1}{\sqrt{2}}\)
Subtopic:  Prisms |
 79%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh