Q. No.For a triangular glass prism, which of the following expression is correct regarding its angle of deviation: (symbols have usual meanings)
1. \(\delta=i+e+A \)
2. \(\delta=i+e-A \)
3. \(\delta=i-e+A \)
4. \(\delta=i-e-A\)
1. \(\delta=i+e+A \)
2. \(\delta=i+e-A \)
3. \(\delta=i-e+A \)
4. \(\delta=i-e-A\)
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The refractive index of a thin prism of an apex angle \(A\) is \( \text{cot}\left(\dfrac{A}{2}\right).\) Then the minimum angle of deviation is:
1. \(180^\circ-3A\)
2. \( 180^\circ-2A\)
3. \( 180^\circ -A\)
4. \(180^\circ-4A\)
1. \(180^\circ-3A\)
2. \( 180^\circ-2A\)
3. \( 180^\circ -A\)
4. \(180^\circ-4A\)
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The refractive index of prism is \(\mu=\sqrt{ } 3\) and the ratio of the angle of minimum deviation to the angles of prism is \(1.\) The value of angle of prism is:
1. \(30^\circ\)
2. \(45^\circ\)
3. \(60^\circ\)
4. \(90^\circ\)
1. \(30^\circ\)
2. \(45^\circ\)
3. \(60^\circ\)
4. \(90^\circ\)
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If the angle of the prism is \(60 ^\circ\) and angle of minimum deviation is \(30 ^\circ\) then the value of angle of incidence and emergence will be respectively:
1. \(45^\circ, 50^\circ\)
2. \(30^\circ, 45^\circ\)
3. \(45^\circ, 45^\circ\)
4. \(30^\circ, 30^\circ\)
1. \(45^\circ, 50^\circ\)
2. \(30^\circ, 45^\circ\)
3. \(45^\circ, 45^\circ\)
4. \(30^\circ, 30^\circ\)
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In the given figure, the face \(AC\) of the equilateral prism is immersed in a liquid of refractive index \(n.\) For the incident angle \(60^{\circ}\) at the side \(AC,\) the refracted light beam just grazes along the face \(AC.\) The refractive index of the liquid \(n = \dfrac{ \sqrt x} {4}.\) The value of \(x\) is:
(Given a refractive index of glass \(\mu=1.5\))
1. \(15\)
2. \(22\)
3. \(24\)
4. \(27\)
(Given a refractive index of glass \(\mu=1.5\))
1. \(15\)
2. \(22\)
3. \(24\)
4. \(27\)
Subtopic: Â Prisms |
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What changes occur in the behaviour of monochromatic light as it passes through a prism, compared to its behaviour in the air?
| 1. | Speed and wavelength are different, but the frequency remains the same. |
| 2. | Speed and frequency are different, but the wavelength remains the same. |
| 3. | Wavelength and frequency are different, but speed remains the same. |
| 4. | Speed, wavelength, and frequency are all different. |
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For a prism under minimum deviation condition, considering the following statements and choose the correct option:
| 1. | Refracted ray becomes parallel to the base of the prism. |
| 2. | Angle of incidence is equal to angle of emergence. |
| 3. | Angle of deviation becomes equal to angle of the prism. |
| 4. | Both (1) and (2) |
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Prism \(A\) has an angle of prism equal to \(6^{\circ}\) and its material has a refractive index of \(1.5\). It is used in combination with prism \(B\) of refractive index \(1.8\) to produce dispersion without deviation. The angle of prism \(B\) is:
1. \(2.53^{\circ}\)
2. \(3.52^{\circ}\)
3. \(5.73^{\circ}\)
4. \(3.75^{\circ}\)
1. \(2.53^{\circ}\)
2. \(3.52^{\circ}\)
3. \(5.73^{\circ}\)
4. \(3.75^{\circ}\)
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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. | \(i=0\) |
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NEET - 2024
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Which of the following diagrams gives the correct dependence of the angle of deviation \((D)\) versus the angle of incidence \((i)\) for a prism?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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