JEE Main & Advanced Physics Communication System / संचार तंत्र Question Bank Assertion and Reason

  • question_answer
    Assertion             :       The electromagnetic waves of shorter wavelength can travel longer distances on earth's surface than those of longer wavelengths. Reason                 :       Shorter the wavelength, the larger is the velocity of wave propagation.

    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 :

                       The electromagnetic waves of shorter wavelength do not suffer much diffraction from the obstacles of earth's atmosphere so they can travel long distance. Also, shorter the wavelength, shorter is the velocity of wave propagation.


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