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)`

Answer 1

`((E_1 - E_2)lambda_1lambda_2)/(C(lambda_2 - lambda_1))`