Question

A comet is in highly elliptical orbit around the Sun. The period of the comet's orbit is $90$ days. Some statements are given regarding the collision between the comet and the earth. Mark the correct statement.[Mass of the Sun$=2\times {10}^{30}$kg, mean distance between the earth and the Sun $=1.5\times {10}^{11}$m].

• A. Collision is there
• B. Collision is not possible
• C. Collision may or may not be there
• D. Enough information is not given

Answer 1

Answer: (B)

Collision is not possible

The time period of comet is $90$ day i.e. very different from that of earth which is $365$ day. Both are very far from each other, hence, collision is not possible. Their time period gives approximation about their orbit.