A hydrogen bomb is more powerful than an atom bomb. Why?

A hydrogen bomb is a

Assertion (A) : Hydrogen bomb is more powerful than atomic bomb. Reason (R) : In hydrogen bomb, fusion reaction is initiated.

Assertion (A) : Hydrogen bomb is more powerful than atomic bomb. Reason (R) : In hydrogen bomb, fusion reaction is initiated.

What is atom bomb?

What is hydrogen bomb?

Atom bomb is due to