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Q. No.If \(i\) is the angle of incidence and \(i'\) is the angle of emergence on a prism, then the relation between \(i\) and \(i'\) to obtain an angle of minimum deviation is:
1. \(i=i'\)
2. \(i>i'\)
3. \(i<i'\)
4. \(i=0\)
Subtopic: Prisms |
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NEET - 2024
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The graph which shows the correct variation of \(\large\frac{1}{v}\) with \(\large\frac{1}{u}\) for a concave mirror, where \(u\) is the object distance and \(v\) is the image distance, is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Reflection at Spherical Surface |
From NCERT
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Time taken by sunlight to pass through a glass slab of thickness \(5~\text{mm}\) and refractive index \(1.5\) is:
1. \(\left(\frac{5}{3}\right) \times 10^{-8}~\text{s}\)
2. \(\left(\frac{5}{2}\right) \times 10^{-11}~\text{s}\)
3. \(\left(\frac{5}{3}\right) \times 10^{-11}~\text{s}\)
4. \(\left(\frac{5}{2}\right)\times 10^{-8}~\text{s}\)
1. \(\left(\frac{5}{3}\right) \times 10^{-8}~\text{s}\)
2. \(\left(\frac{5}{2}\right) \times 10^{-11}~\text{s}\)
3. \(\left(\frac{5}{3}\right) \times 10^{-11}~\text{s}\)
4. \(\left(\frac{5}{2}\right)\times 10^{-8}~\text{s}\)
Subtopic: Refraction at Plane Surface |
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NEET - 2024
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A small telescope has an objective of focal length \(140~\text{cm}\) and an eye piece of focal length \(5.0~\text{cm}\) The magnifying power of telescope for viewing a distant object is:
1. \(28\)
2. \(17\)
3. \(32\)
4. \(34\)
1. \(28\)
2. \(17\)
3. \(32\)
4. \(34\)
Subtopic: Telescope |
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A light ray enters through a right-angled prism at point \(P\) with the angle of incidence \(30^\circ\) as shown in 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. \(\large{\frac{\sqrt5}{2}}\)
2. \(\large{\frac{\sqrt3}{4}}\)
3. \(\large{\frac{\sqrt3}{2}}\)
4. \(\large{\frac{\sqrt5}{4}}\)
1. \(\large{\frac{\sqrt5}{2}}\)
2. \(\large{\frac{\sqrt3}{4}}\)
3. \(\large{\frac{\sqrt3}{2}}\)
4. \(\large{\frac{\sqrt5}{4}}\)
Subtopic: Prisms |
From NCERT
NEET - 2024
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An object is mounted on a wall. Its image of equal size is to be obtained on a parallel wall with the help of a convex lens placed between these walls. The lens is kept at distance \(x\) in front of the second wall. The required focal length of the lens will be:
| 1. | less than \(\frac x4\) |
| 2. | more than \(\frac x4\) but less than \(\frac x2\) |
| 3. | \(\frac x2\) |
| 4. | \(\frac x4\) |
Subtopic: Refraction at Curved Surface |
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NEET - 2023
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Which set of colors will come out in air for a situation shown in figure?
| 1. | Yellow, Orange and Red |
| 2. | Blue, Green and Yellow |
| 3. | Orange, Red and Violet |
| 4. | All |
Subtopic: Total Internal Reflection |
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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. \(6^\circ\)
1. \(9^\circ\)
2. \(10^\circ\)
3. \(4^\circ\)
4. \(6^\circ\)
Subtopic: Prisms |
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A lens is made up of \(3\) different transparent media as shown in the figure. A point object \(O\) is placed on its axis beyond \(2f\). How many real images will be obtained on the other side?
| 1. | \(2\) | 2. | \(1\) |
| 3. | No image will be formed | 4. | \(3\) |
Subtopic: Lenses |
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Two thin lenses are of the same focal lengths (\(f\)), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will be:
1. infinite
2. zero
3. \(f/4\)
4. \(f/2\)
1. infinite
2. zero
3. \(f/4\)
4. \(f/2\)
Subtopic: Lenses |
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