Work Energy And Power Question 123

Question: A neutron makes a head-on elastic collision with a stationary deuteron. The fractional energy loss of the neutron in the collision is [AIIMS 2003]

Options:

A) 16/81

B) 8/9

C) 8/27

D) 2/3

Show Answer

Answer:

Correct Answer: B

Solution:

Fractional decrease in kinetic energy of neutron = 1(m1m2m1+m2)2 [As m1=1 and m2=2 ] =1(121+2)2

=1(13)2=119=89



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