Q. Assertion : Planet is a heavenly body revolving round the sun.
Reason : Star is luminous body made of gaseous material.

 3504  203 AIIMSAIIMS 2002Gravitation Report Error

Solution:

A heavenly body revolving round the sun is called a planet and there are nine planets in our solar system. A heavenly body, made of gaseous material and luminous due to its own energy, is called a star. The sun is also a star and is nearest to earth.