First slide

Nuclear stability

Question

The operation of a nuclear reactor is said to be critical if the multiplication factor (k) has a value of what?

Easy

A

1
B

0
C

1.5
D

2.1

Solution

For a nuclear reactor, k = 1. It is the ratio of the number of neutrons produced in a nuclear pile to the number disappearing that must equal to unity for a chain reaction.

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