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Assertion: The electromagnetic waves of ...

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

A

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

B

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

C

If assertion is true but reason is false.

D

If assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C
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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Knowledge Check

  • Assertion: The electromagnetic waves of all wavelengths can be polarised. Reaseon : Polarisationo is independent of the wavelegths of electromagnetic waves.

    A
    Assertion is True, Reason is True, Reason is a correct explanation for Assertion
    B
    Assertion is True, Reason is True, Reason is not a correct explanation for Assertion
    C
    Assertion is True, Reasonis False
    D
    Assertion is False, Reason is True

  • The relation between frequency n , wavelength lambda , and velocity of propagation v of wave is

    A
    `n=vlambda`
    B
    `n=(lambda//v)`
    C
    `n=(v//lambda)`
    D
    None of these

  • Assertion : The electromagnetic waves are transverse in nature. Reason : Waves of wavelength 10 μm are radiowave and microwave.

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