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

  • question_answer
    Assertion             :       The de-Broglie wavelength of a molecule varies inversely as the square root of temperature. Reason                 :       The root mean square velocity of the molecule depends on the temperature. [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: A

    Solution :

                de-Broglie wavelength associated with gas molecules varies as \[\lambda \propto \frac{1}{\sqrt{T}}\]


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