12th Class Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Assertion And Reason (MCQs) - Moving Charges and Magnetism

  • question_answer
    ASSERTION: Cyclotron is a device which is used to accelerate the positive ion.
    REASON: Cyclotron frequency depends up on the velocity.

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

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

    C) If assertion is true but reason is false.

    D) If both assertion and reason 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\[v=\frac{Be}{2\pi m}\]. It means Cyclotron frequency doesn't depends upon velocity. Therefore, assertion is true and reason false.


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