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Assertion: if wavelength of light is do...

Assertion: if wavelength of light is doubled, energy and momentum of photons are reduced to half.
Reason: By increasing the wavelength, speed of photons will decrease.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason or true but Reason is not the correct explanation of Assertion.

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C
`E = (hc)/(lambda) and P =(h)/(lambda)`
`:. E and P prop (1)/(lambda)`
Speed of all wavelengths (in vacuum) is c.
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