Question

If the neutron reproduction factor $K$ is
a) greater than $1$, the fission reaction is accelerated
b) less than $1$, the fission reaction retards
c) equal to $1$, the fission reaction is at steady state

• A. a,b are true
• B. b,c are true
• C. a,c are true
• D. a,b,c true

Answer 1

The correct option is D a,b,c true

Reproduction factor (K) : It is the ratio of number of neutrons in any particular generation to the number of neutrons in the preceeding generation.
So, if K > 1 reaction is accelerated
if K = 1 reaction is at steady state
if K < 1 reaction retards.