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A proton and helium necleus are shot int...

A proton and helium necleus are shot into a magnetic field at right angles to the field with same kinetic energy. Then the ratio of their radii is

A

both acquire same energy

B

deuterium accelerates faster

C

helium accelerates faster

D

neither of them is accelerated

Text Solution

Verified by Experts

The correct Answer is:
D

Deuterium `""_(1)^(2)D` and helium `""_(2)^(4)He` are both neutral. Only ions are accelerated by an electric field or magnetic field when ions is moving perpendicular to the magnetic field. Therefore both will not be accelerated.
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