Question

The tail of the comet is due to

• A. Vaporisation of water on the comet
• B. Sublimation of vapour in the comet
• C. Cooling of water in the comet
• D. Vaporisation of heat in the comet

Answer 1

Answer: (A)

Vaporisation of water on the comet

Answer 2

If a comet approaches the sun, the substances like water etc. on the comet, get vaporised due to the heat of Sun, and radiation pressure forces of these vapours move away from the Sun. Hence, it forms the tail of the comet.