Question

Assertion (A): If an electron and proton enter a magnetic field with equal momentum, then the paths of both of them will be equally curved. Reason (R): The magnitude of charge on an electron is same as that on a proton.

Answer 1

Answer:

Assertion: If an electron and proton enter an electric field with equal energy, then path of electron is more curved than that of proton. Reason: Electron has a tendency to form curve.

Explanation:

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Answer 2

Answer: Assertion and Reason both are correct and Reason is correct explanation of Assertion.

Explanation:

As $\[qvB = \frac{{{v^2}}}{r}\]$

Thus,

 $\[r = \left( {\frac{{mv}}{{qB}}} \right)\]$

As B is uniform

Also electron and proton have same magnitude charge

Hence r ∝ mv

mv is momentum

Both have same momentum as given

Thus, both will have circular path with equal radius.

Hence, Assertion and Reason both are correct and Reason is correct explanation of Assertion.