Question

An electron and a proton are accelerated through a potential V. If pe and Pp are their
momentum, then pp/pe ratio is approximately equal to

Answer 1

Given:

The momentum of electron is Pe

The momentum of proton is Pp

To find:

The ratio of both the momentum

Solution:

The formula of momentum is

p=√2mqV

For the momentum of electron is

Pe=√2mqV

For the momentum of proton is

Pp=√2m'q'V

Taking the ratio of both

Pp/Pe=√2m'q'V/√2mqV

Pp/Pe=√m'q'/√mq

Pp/Pe=m'q'/mq

So the ratio is approximately equal to m'q'/mq