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Q. No.A light ray enters through a right-angled prism at point P with the angle of incidence 30∘ 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. | √52 | 2. | √34 |
| 3. | √32 | 4. | √54 |
Subtopic: Prisms |
From NCERT
NEET - 2024
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A small telescope has an objective of focal length 140 cm and an eyepiece of focal length 5.0 cm. The magnifying power of the 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 |
77%
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NEET - 2024
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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 |
Subtopic: Prisms |
84%
From NCERT
NEET - 2024
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The graph which shows the correct variation of 1v with 1u 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 |
53%
From NCERT
NEET - 2024
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The time taken by sunlight to pass through a glass slab of thickness 5 mm and refractive index 1.5 is:
| 1. | (53)×10−8 s | 2. | (52)×10−11 s |
| 3. | (53)×10−11 s | 4. | (52)×10−8 s |
Subtopic: Refraction at Plane Surface |
75%
From NCERT
NEET - 2024
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Given below are two statements:
| Statement I: | Image formation needs regular reflection and/or refraction. |
| Statement II: | The variety in colour of objects we see around us is due to the constituent colours of the light incident on them. |
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Statement I is incorrect but Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect. |
Subtopic: Reflection at Plane Surface |
62%
From NCERT
NEET - 2024
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Light travels a distance x in time t1 in air and 10x in time t2 in another denser medium. What is the critical angle for this medium?
| 1. | sin−1(10t1t2) | 2. | sin−1(t2t1) |
| 3. | sin−1(10t2t1) | 4. | sin−1(t110t2) |
Subtopic: Total Internal Reflection |
66%
From NCERT
NEET - 2023
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In the figure shown here, what is the equivalent focal length of the combination of lenses?
(Assume that all layers are thin)
(Assume that all layers are thin)
| 1. | −50 cm | 2. | 40 cm |
| 3. | −40 cm | 4. | −100 cm |
Subtopic: Lens Makers' Formula |
51%
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NEET - 2023
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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 |
61%
From NCERT
NEET - 2023
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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
1. 2
2. 1
3. No image will be formed
4. 3
Subtopic: Lenses |
66%
From NCERT
NEET - 2023
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