The energy associated with the photon of a radio transmission at 3 x 10^5 Hz is [h = 6.63 x 10^-34Js]

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A. 2.00 x 10-28J
B. 1.30 x 10-28J
C. 2.00 x 10-29J
D. 1.30 x 10-28J

Correct Answer: Option A

Explanation

A photon of energy E = hf
= 6.63 x 10-34 x 3 x 105
= 19.89 x 10-29
= 2.0 x 10-28J

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