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प्रश्न
What is atmospheric reflection? Explain with the help of a labelled diagram that the position of a star as seen by us is not its true position.
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उत्तर
Refraction of light by earth’s atmosphere is called at,ospheric refraction
Since the atmosphere bends the starlight towards the normal, the apparent position of the star is slightly different from actual position.
The star appears slightly higher from actual position when viewed near horizon.
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संबंधित प्रश्न
If an object is placed at a distance of 10 cm in from of a plane mirror, how far would it be from its image?
A ray of light strikes a plane mirror such that its angle of incidence is 30°. What angle does the reflected ray make with the mirror surface?
State the uses of plane mirrors.
The angle of reflection is equal to the angle of incidence:
(a) always
(b) sometimes
(c) under special conditions
(d) never
Name the phenomenon due to which a swimming pool appears less deep than it really is.
Fill in the following blank with suitable word:
Light travelling along a normal is ...............refracted.
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Which is optically denser : water or glass?
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Explain the working of a periscope.
In the above diagram light is travelling through different media. It is noted by a scientist that ∠1= ∠3 = ∠4 but ∠2 < ∠1. Which of the following statement would be correct?
