A photosensitive metallic surface has work function, h$\upsilon $0. If photons of energy $2h{\upsilon _0}$ fall on this surface, the electrons come out with a maximum velocity of 4 $ \times $ 106 m/s. When the photon energy is increased to 5 h$\upsilon $0, then maximum velocity of photoelectrons will be

Question

A photosensitive metallic surface has work function, h$\upsilon $₀. If photons of energy $2h{\upsilon _0}$ fall on this surface, the electrons come out with a maximum velocity of 4 $ \times $ 10⁶ m/s. When the photon energy is increased to 5 h$\upsilon $₀, then maximum velocity of photoelectrons will be

2 $ \times $ 10⁷ m/s

2 $ \times $ 10⁶ m/s

8 $ \times $ 10⁶ m/s

8 $ \times $ 10⁵ m/s

Solution

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