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An electron , a proton a deutron and alp...

An electron , a proton a deutron and `alpha - ` particle have the same kinetic energy . Which of these particle has the larger momentum ?

A

an elctron

B

a proton

C

a deutron

D

`alpha ` - particle

Text Solution

Verified by Experts

The correct Answer is:
D
Kinetic energy `K = (p^(2))/(2m)`
K = constant , `p prop sqrt(m)`
` :. ` if mass is more its linear momentum is more .
Here `alpha ` - particle have more mass so its linear momentum is more .
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