Out of the two Media – Medium 1 and Medium 2, in which is the speed of light more?
The speed of light is more in Medium 1 as the refracted ray bends away from the normal when it enters Medium 2, which suggests that the speed of light in Medium 1 is higher.


Give reasons:
(i) The sky appears dark to passengers flying at very high altitudes.
At very high altitudes, passengers are above the atmosphere where there is less scattering of sunlight. As a result, they do not see the scattered blue light and the sky appears dark, similar to the condition experienced by astronauts in space.
(ii) 'Danger' signal lights are red in color.

