Question

The operation of a nuclear reactor is said to be critical, if the multiplication factor (K) has a value 

(a) 1

(b) 1.5

(c) 2.1

(d) 2.5 

Answer 1

The correct option is (a) 1.

Explanation:

If multiplication factor K = 1, the operation of nuclear reactor is said to be critical. If it is less than one, reaction can be sustained and if the multiplication factor is more than one, the reaction becomes uncontrolled, it is an explosion.