A Comet's tail becomes visible?
دمدار ستارے کی دم کب نظر آتی ہے؟
- Sunlight illuminates its tail which is always attached to its body
- When its surface temperature rises on approach nearing Sun
- When their velocity in orbit increases due to gravitational pull of Sun
- None of these
Explanation
- A comet’s tail becomes visible when it comes closer to the Sun.
- Heat from the Sun causes ice in the comet to vaporize (sublimation).
- This releases gas and dust, forming a glowing tail.
- The tail always points away from the Sun due to solar radiation.
- Comets are mostly made of ice, dust, and rocky material.
Last verified on 25-04-2026
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