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Assertion: A charged particle enters in ...

Assertion: A charged particle enters in a magnetic field `B=B_0hati with velocity v=v_0hati+v_0hatj, ` then minimum speed of charged particle may be `v_0`.
Reason: A variable acceleration particle may be `v_0`.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
`|v|=sqrt2v_0` =speed, which always remains constant.
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