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Assertion: Like light radiation, thermal...

Assertion: Like light radiation, thermal radiations are also electromagnetic radiation.
Reason: The thermal radiations require no medium for propagatio.

A

Both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

Both Assertion and Reason are true, but Reason is not true explanation of the Assertion.

C

Assertion is true, but the Reason is false.

D

both Assertion and Reason is false.

Text Solution

Verified by Experts

The correct Answer is:
b
Both Assertion and Reason are true. But the
Reason is not correct explanation of Assertion.
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PRADEEP-ELECTROMAGNETIC WAVES-Exercise
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  2. In terms of potential difference C, electric currentI , permittivity e...

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  3. The sun delivers 10^3W//m^2 of electromagnetic flux to the earth's sur...

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  4. The sun delivers 10^3W//m^2 of electromagnetic flux to the earth's sur...

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  5. The electric field associated with an e.m. wave is described by the eq...

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  6. The speed of em wave in the unit of 10^8m//s, in a medium of dielectri...

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  7. The dielectric constant for air is 1.006. The speed of em wave travell...

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  8. A flood light will be covered with filter that transmits red light. Th...

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  9. Assertion: Displacement current is a fictious current and has nothing ...

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  10. Assertion: Environment damage has increased the amount of ozone in the...

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  11. Statement-1 : A changing electric field produces a magnetic field St...

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  12. Assertion: Light can travel in vacuum but sound cannot do so. Reason...

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  13. Assertion: EM wave are transwers in nature. Reason: The electric and...

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  14. Assertion: Like light radiation, thermal radiations are also electroma...

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  15. Assertion: A charge moving in a circular orbit can produce em wave. ...

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  16. Statement-1: Short wave band are used for transmission fo radiowaves t...

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  17. Statement-1: In an em wave, the direction of the magnetic field induct...

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  18. Statement-1: Magnetic field lines cannot start from a point nor end at...

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  19. Statement-1: Out of the following radiations, microwave, ulrtaviolet a...

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  20. Statement-1: Gamma rays are more energetic than X-rays. Statement-2:...

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