NEET2011PhysicsNuclear PhysicsActual
Assertion : For nuclear reactor, it is desirable to have k=1 . Reason : Sustained chain reaction occur at this critical condition.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
A. If both assertion and reason are true and reason is the correct explanation of assertion.
Step-by-step solution
Multiplication factor (k) is a measure of the growth rate of neutrons in the reactor. For k=1 ; the operation of the reaction is said to be critical condition at which sustained chain reaction occurs. If k becomes greater than the reaction rate and reactor power increases exponentially.