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प्रश्न
Write all the capital letters of the alphabet which look the same in a plane mirror.
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उत्तर
All the capital letters of the alphabet that look the same in a plane mirror are W, X, V, A, H, M, O, I and T.
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संबंधित प्रश्न
Which type of reflection of light leads to the formation of images?
The figure given alongside shows the image of a clock as seen a plane mirror. The correct time is:
Figure
(a) 2.25
(b) 2.35
(c) 6.45
(d) 9.25
A man stands 10 m in front of a large plane mirror. How far must the walk before he is 5 m away from his image?
A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.
When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?
Why does a ray of light bend when it travels from one medium to another?
A vertical ray of light strikes the horizontal surface of some water:
What is the angle of incidence?
Water is optically denser than glass.
The speed of light is more in glass than in water.
Match the Following
| Column A | Column B |
| (a) white Light | (1) Convex mirror |
| (b) Refraction | (2) Concave mirror |
| (c) Virtual images | (3) refraction |
| (d) Real images | (4) spectrum |
| (e) Prism | (5) ray of light from glass to air |
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (/), and the angle of refraction (r)
A small air bubble in a glass block when seen from above appears to be raised because of ______.
The laws of reflection hold true for ______.
Identify the wrong figure from the following.
The speed of light varies in different media.
The refractive index of four substances A, B, C, and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in
Assertion and reasoning type
- Assertion: If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small
- Reason: Refractive index of the medium is inversely proportional to the velocity of the light
If a beam of red light and a beam of violet light are incident at the same angle on the inclined surface of a prism from air medium and produce angles of refraction r and v respectively, which of the following is correct?
Which is optically denser out of the two medium M1& M2 having the refractive indices = 1.71 and 1.36 respectively?
