A beam consisting of protons and electrons moving at the same spe… - Vidyadip

MCQ

A beam consisting of protons and electrons moving at the same speed goes through a thin region in which there is a magnetic field perpendicular to the beam. The protons and the electrons:

A
Will go undeviated.
B
Will be deviated by the same angle and will not separate.
✓
Will be deviated by different angles and hence separate.
D
Will be deviated by the same angle but will separate.

✓

Answer

Correct option: C.

Will be deviated by different angles and hence separate.

c. Will be deviated by different angles and hence separate.
Explanation:
$\overrightarrow{ F }= q ( V \times B )$
Charge proton is poritive $= e$
$F_p=e v B$
Charge of electron is negative $=-e$
$F_e=-e v B$
They will be deviated by different angles and Hence separate.

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