Question

20 Read the following table and answer the following from 20 (a) to 20(d)
If we look at objects through the hot air over fire, the objects appear to be moving slightly. The air just
above the fire becomes hotter. This hotter air is optically rarer but the colder air further up is slightly
denser
. So, when we see the objects by the light coming from them through hot and cold air layers
having different optical densities, then refraction of light takes place randomly due to which the
objects appear to be mov slightly
The stars appear shifted from their actual position due to the phenomenon of
Diffraction
Scattering
Refraction
(iv) Reflection
(b) The Sun appears flattened at sunrise and sunset due to
Scattering of light
Diffraction of light
(1 Atmospheric refraction
(iv) Atmospheric diffraction
Which of the following phenomenon is not caused by atmospheric refraction?
Advanced sunrise
Delayed sunset
Image formation
(iv) Mirage
(d) Would the length of the day be affected if the earth does not have the atmosphere?
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Answer 1

Answer:

no But Pictures hee kyaa??