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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?
Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .
The angle of reflection is equal to the angle of incidence:
(a) always
(b) sometimes
(c) under special conditions
(d) never
Why does a ray of light bend when it travels from one medium to another?
A coin in a glass tumbler appears to rise as the glass tumbler is slowly filled with water. Name the phenomenon responsible for this effect.
Water is optically .......... than air.
A real image is formed by the light rays after reflection or refraction when they:
- actually meet or intersect with each other.
- actually converge at a point.
- appear to meet when they are produced in the backward direction.
- appear to diverge from a point.
Which of the above statements are correct?
The laws of reflection hold true for ______.
Identify the wrong figure from the following.
State whether true or false. If false, correct the statement.
The angle of deviation depends on the refractive index of the glass.
