| Assertion (A): An electron and a proton moving with same velocity enters a magnetic field. The force experienced by the proton is more than the force experienced by the electron. |
| Reason (R): The mass of proton is more than the mass of the electron. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: D
Solution :
| Option [d] is correct, |
| Explanation: \[\overset{\to }{\mathop{F}}\,=q\overset{\to }{\mathop{(v}}\,\times \overset{\to }{\mathop{B)}}\,\] |
| So, the force is mass independent. So, the assertion is false. |
| Proton is obviously heavier than electron. So, reason is true. But reason does not explain the assertion. |
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