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Physics CBSE Live product
Class 10 (2026-27)
The human eye and the colourful world
Atmospheric refraction
3.
TBQ - Twinkling of stars
Question:
4
m.
Choose the correct answer:
1
.
Why are stars considered point sources of light?
Because stars do not emit enough light to be seen clearly
Because stars are surrounded by gases that block most of their light
Because stars are very large but appear small due to their brightness
Because stars are very far away from Earth, making them appear as tiny points
2
.
Why don’t planets show twinkling like stars?
Because planets do not emit any light at all
Because planets are much smaller than stars and produce less light
Because planets are relatively closer to Earth and appear as extended sources of light
Because planets are outside the Earth’s atmosphere
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