# Solution - The Planck'S Constant - Einstein’s Equation - Particle Nature of Light

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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).

1. ((E_1 - E_2)(lambda_1 - lambda_2))/(C(lambda_1 * lambda_2))
2. ((E_1 - E_2)lambda_1C)/((lambda_1 - lambda_2)lambda_2)
3. ((E_1 - E_2)lambda_1lambda_2)/(C(lambda_2 - lambda_1))
4. ((lambda_1 - lambda_2)C)/((E_1 - E_2)lambda_1 * lambda_2)

#### Solution

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