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QAIPMT-2005-Ph-2557: NEET 2005 Physics - Class 12 AIPMT-2005-Ph-2557 Solution: A photosensitive metallic surface has work function, \(h _0\).…
A photosensitive metallic surface has work function, . If photons of energy fall on this surface, the electrons come out with a maximum velocity of m/s. When the photon energy is increased to , then maximum velocity of photoelectrons will be
Multiple Choice Options
- A m/s
- B m/s
- C m/s
- D m/s
Step-by-Step Verified Solution
2h _ 0 = h _ 0 + 1 2 m ( 4 _ 10 6 ) 2
5h _ 0 = h _ 0 + 1 2 m v 2
_ 4 _ 1 2 m ( 4 _ 10 6 ) 2 = 1 2 m v 2
_ v = 8 _ 10 6 m/s