JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Assertion and Reason

  • question_answer
    Assertion             :       The specific charge of positive rays is not constant. Reason                 :       The mass of ions varies with speed. [AIIMS 1999]

    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: B

    Solution :

                The specific charge \[(e/m)\] of the positive rays is not universal constant because these rays may consists of ions of different element.


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