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A moving neutron collides with a station...

A moving neutron collides with a stationary ` alpha ` - particle . The fraction of the kinetic energy lost by the neutron is

A

`(16)/(25)`

B

`(9)/(25)`

C

`(3)/(5)`

D

`(2)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
Fraction of KE lost ` = ( 4 x)/( (1 + x)^(2)) = ( 4 xx 4)/( ( 1 + 4)^(2))`
`= (16)/( 25)`
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