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Question
When radiations of wavelength λ1 and λ2 are incident on certain photosensitive, such that E1 > E2 . Then Planck's constant 'h' is ......................... .
(C = Velocity of light).
Options
`((E_1 - E_2)(lambda_1 - lambda_2))/(C(lambda_1 * lambda_2))`
`((E_1 - E_2)lambda_1C)/((lambda_1 - lambda_2)lambda_2)`
`((E_1 - E_2)lambda_1lambda_2)/(C(lambda_2 - lambda_1))`
`((lambda_1 - lambda_2)C)/((E_1 - E_2)lambda_1 * lambda_2)`
Solution
`((E_1 - E_2)lambda_1lambda_2)/(C(lambda_2 - lambda_1))`
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