JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Assertion and Reason

  • question_answer
    Assertion             :       Cyclotron is a device which is used to accelerate the positive ion. Reason                 :   Cyclotron frequency depends upon the velocity.          [AIIMS 1997]

    A)             If both assertion and reason are true and the reason is the correct explanation of the assertion.

    B)             If both assertion and reason are true but reason is not the correct explanation of the assertion.

    C)             If assertion is true but reason is false.

    D)             If the assertion and reason both are false.

    E)             If assertion is false but reason is true.

    Correct Answer: C

    Solution :

                Cyclotron is utilised to accelerate the positive ion. And cyclotron frequency is given by \[\nu =\frac{Be}{2\pi m}.\] It means cyclotron frequency doesn't depends upon velocity. Therefore, assertion is true and reason false.


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