Advertisements
Advertisements
प्रश्न
Explain in brief the reason for the following :
Delayed sunset
उत्तर
Delayed sunset
Similary, Sun is seen about two minutes after the actual sunset because of the refraction of sunlight through the atmosphere. Again when Sun is just below the horizon, sunlight enters the Earth's atmosphere obliquely and gets refracted through the different layers of the atmosphere. As a result, sunlight gets bent and reaches the eyes of the observer. Following the path of light rays entering the eyes, the observer sees the Sun again slightly above its actual position. As a result of this, Sun is seen for two minutes even after the actual sunset.
APPEARS IN
संबंधित प्रश्न
With the help of scattering of light, explain the reason for the difference in colours of the Sun as it appears during sunset/sunrise and noon.
Explain giving reason why the sky appears blue to an observer from the surface of the earth? What will the colour of the sky be for an astronaut staying in the international space station orbiting the earth? Justify your answer giving reason.
What colours lie on the two sides of the 'green colour' in the spectrum of white light?
What is the order of colours in a rainbow, from the outside to the inside?
Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.
Which component of sunlight is scattered away when the sun appears red at sunrise or sunset?
In an experiment to study the scattering of light by passing a beam of white light through a colloidal solution of sulphur in a transparent glass tank:
Which colour is observed from the front of the glass tank? Does this colour correspond to the colour of sky on a clear day or the colour of sky around the sun at sunset?
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
What characteristic property of light is responsible for the blue colour of the sky?
The clear sky appears blue because