Assertion : Quasar emits radiowaves more than radio galaxy .
Reason : Quasar has very small size.

Options

A. If both the assertion and reason are true and reason is correct explanation of the assertion .
B. If both the assertion and reason are true but reason is not a correct explanation of the assertion .
C. If the assertion is true but the reason is false.
D. If both assertion and reason are false.

Answer

B

Explanation

A quasar is a very big source of radio waves and its size is very small as compared to the size of a galaxy. A radio galaxy emits radio waves which lie in the range ` 10^(30)` to ` 10^(38)` watt. A quasar emits radio waves which lie in the range of ` 10^(37)` to ` 10^(38)` watt.