The ratio of energies of photons with wavelengths 2000A^(0) and 4000A^

1.	The ratio of energies of photons with wavelengths 2000A^(0) and 4000A^(0) is
Answer» `1:4` `4:1` `1:2` `2:1` SOLUTION :`(E_1)/(E_2) = (lambda_2)/(lambda_1)`

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