Q.

The ratio of the energy of a photon of 2000 Å wavelength radiation to that of 4000 Å radiation is

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a

¼

b

4

c

½

d

2

answer is D.

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Detailed Solution

E=hv=hcλi.e.E∝1λ E1E2=λ2λ1=40002000=2Hence, the correct answer is (D).
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