EASY
10th CBSE
IMPORTANT
Earn 100
The stars twinkle but the planets do not twinkle at night because:
70.83% studentsanswered this correctly
Important Questions on The Human Eye and The Colourful World
EASY
10th CBSE
IMPORTANT
As light from a far off star comes down towards the earth:
EASY
10th CBSE
IMPORTANT
We can see the sun before the actual sunrise by about:
MEDIUM
10th CBSE
IMPORTANT
Due to atmospheric refraction of sunlight, the time from sunrise to sunset is lengthened by about:
EASY
10th CBSE
IMPORTANT
The day is longer on the earth by about minutes because:
HARD
10th CBSE
IMPORTANT
We know that light refracts (or bends) when it goes from one medium to another. Now, the atmosphere contains only air. Then how does light get refracted on passing through only air in the atmosphere?
MEDIUM
10th CBSE
IMPORTANT
By how much time the day would have been shorter if the earth had no atmosphere?
EASY
10th CBSE
IMPORTANT
A student claims that because of atmospheric refraction, the sun can be seen after it has set, and the day is, therefore, longer than if the earth had no atmosphere.
What does the student mean by saying that the sun can be seen after it has set?
EASY
10th CBSE
IMPORTANT
A student claims that because of atmospheric refraction, the sun can be seen after it has set, and the day is, therefore, longer than if the earth had no atmosphere. Do you think that the students' conclusion is correct?
