Advertisements
Advertisements
प्रश्न
The correct sequencing of angle of incidence, angle of emergence, angle of refraction and lateral displacement shown in the following diagram by digits 1, 2, 3 and 4 is:
(a) 2, 4, 1, 3
(b) 2, 1, 4, 3
(c) 1, 2, 4, 3
(d) 2, 1, 3, 4
Advertisements
उत्तर
Angle 2 is angle of incidence. As, it is formed between the incident ray and the normal.
Angle 1 is angle of emergence. As, it is formed between the emergent ray with normal.
Angle 4 is angle of refraction. As, it is formed between the refracted ray and the normal.
3 shows the lateral displacement.
Hence, the correct answer is 2, 1, 4, 3
APPEARS IN
संबंधित प्रश्न
Explain why the planets do not twinkle.
Name the phenomenon which causes the twinkling of stars.
Atmospheric refraction causes advance sunrise and delayed sunset. By how much time is:
sunrise advanced?
Fill in the following blank with suitable word:
We can see the sun about ................ minutes before the actual sunrise and about ................ minutes after the actual sunset because of atmospheric ................
The atmospheric refraction of light causes the twinkling of:
(a) planets only
(b) stars only
(c) planets and stars
(d) stars and satellites
The stars twinkle but the planets do not twinkle at night because:
(a) the stars are small but the planets are large
(b) the stars are very large but planets are small
(c) the stars are much nearer but planets are far off
(d) the stars are far off but planets are nearer to earth
By how much time the day would have been shorter if the earth had no atmosphere?
What causes the scattering of blue component of sunlight in the atmosphere?
Explain the refraction of light through a triangular glass prism using a labelled ray diagram. Hence define the angle of deviation.
How does refraction take place in the atmosphere? Why do stars twinkle but not the planets?
