- 1(current)
Q. No.A light ray enters through a right-angled prism at point \(P\) with the angle of incidence \(30^\circ\) as shown in the figure. It travels through the prism parallel to its base \(BC\) and emerges along the face \(AC.\) The refractive index of the prism is:
| 1. | \({\dfrac{\sqrt5}{2}}\) | 2. | \({\dfrac{\sqrt3}{4}}\) |
| 3. | \({\dfrac{\sqrt3}{2}}\) | 4. | \({\dfrac{\sqrt5}{4}}\) |
Subtopic: Â Prisms |
Level 3: 35%-60%
NEET - 2024
Hints
For a prism, when the light undergoes minimum deviation, the relationship between the angle of incidence \((i)\) and the angle of emergence \((i')\) is:
| 1. | \(i=i'\) | 2. | \(i>i'\) |
| 3. | \(i<i'\) | 4. | \(i=0\) |
Subtopic: Â Prisms |
 83%
Level 1: 80%+
NEET - 2024
Hints
A horizontal ray of light is incident on the right-angled prism with prism angle \(6^\circ.\) If the refractive index of the material of the prism is \(1.5,\) then the angle of emergence will be:
| 1. | \(9^\circ\) | 2. | \(10^\circ\) |
| 3. | \(4^\circ\) | 4. | \(6^\circ\) |
Subtopic: Â Prisms |
 63%
Level 2: 60%+
NEET - 2023
Hints
Find the value of the angle of emergence from the prism given below for the incidence ray shown. The refractive index of the glass is \(\sqrt{3}\).
| 1. | \(45^{\circ}\) | 2. | \(90^{\circ}\) |
| 3. | \(60^{\circ}\) | 4. | \(30^{\circ}\) |
Subtopic: Â Prisms |
 59%
Level 3: 35%-60%
NEET - 2021
Hints
Links
A ray of light is incident at an angle of incidence, \(i\), on one face of a prism of angle A (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is \(\mu\), the angle of incidence \(i\), is nearly equal to:
1. \(\mu A\)
2. \(\dfrac{\mu A}{2}\)
3. \(\frac{A}{\mu}\)
4. \(\frac{A}{2\mu}\)
Subtopic: Â Prisms |
 70%
Level 2: 60%+
NEET - 2020
Hints
- 1(current)
Q. No.
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