NEET Physics Kinetic Energy Assertion Reason Question
Assertion (A): In a head-on elastic collision between a neutron and deuterium, almost 90% of the neutron's kinetic energy is transferred to deuterium.
Reason (R): The fractional kinetic energy lost by the neutron is determined by the mass ratio of the colliding particles.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
In an elastic collision, the energy transfer is determined by the mass ratio. For deuterium (m2 = 2m1), f1 = 1/9 (10% retained), so 90% is transferred.
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