EASY
10th CBSE
IMPORTANT
Earn 100

What would be the colour of the sky if the earth had no atmosphere? Give reason for your answer.

Important Questions on Human Eye and the Colorful World

EASY
10th CBSE
IMPORTANT
The sky appears black or dark instead of blue to an astronaut. Explain.
EASY
10th CBSE
IMPORTANT
Explain why sun appears red during sunrise and sunset.
EASY
10th CBSE
IMPORTANT
Explain refraction of light through a glass prism using a labelled ray diagram and hence define the angle of deviation.
EASY
10th CBSE
IMPORTANT
Explain the following effect and support your answer with diagram where necessary:
Twinkling of stars.
MEDIUM
10th CBSE
IMPORTANT
Explain the following effect and support your answer with diagram where necessary:
Stars appear higher than they actually are.
MEDIUM
10th CBSE
IMPORTANT
Explain the following effect and support your answer with diagram where necessary:
Advanced sunrise and delayed sunset.
EASY
10th CBSE
IMPORTANT
Explain the following effect:
Tyndall effect
EASY
10th CBSE
IMPORTANT
Explain the following effect:
The colour of sky on a clear, sunny afternoon is blue.