Advertisements
Advertisements
Question
How would the sky appear when seen from the space (or moon)? Give reason for your answer.
Advertisements
Solution
On the moon, since there is no atmosphere, therefore there is no scattering of sun light incident on the moon surface. Hence to an observer on the surface of the moon (space), no light reaches the eye of the observer except the light directly from the sun. Thus the sky will have no colour and will appear black to an observer on the moon surface.
APPEARS IN
RELATED QUESTIONS
Name the scientist who discovered that sunlight consists of seven colours.
What is meant by dispersion of white light? Describe the formation of rainbow in the sky with the help of a diagram.
Name some everyday objects:
which absorb all the colours in sunlight
Which phenomenon makes us see the sun:
a few minutes after actual sunset?
We can see the sun before the actual sunrise by about:
(a) 5 minutes
(b) 2 minutes
(c) 2 hours
(d) 20 minutes
What is the colour of the sunlight scattered by the air molecules in the atmosphere?
What is tyndall effect? Explain with an example.
The sky appears blue because some of the blue component of sunlight is scattered by:
(a) gas molecules present in air
(b) dust particles present in air
(c) water droplets suspended in air
(d) soot particles present in air
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?
Explain in brief the reason for the following:
Twinkling of stars
