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

  • question_answer
    Assertion             :       Soft and hard X-rays differ in frequency as well as velocity. Reason                 :       The penetrating power of hard X-rays is more than the penetrating power of soft X-rays.

    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: E

    Solution :

                    Soft and hard X-rays differ only in frequency. But both types of X-ray travel with speed of light.


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