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153.Surface of certain metal is first illuminated withlight of wavelength λ ,-350 nm and then, bylight of wavelength λ 2-540 nm. It is found thatthe maximum speed of the photo electrons intwo cases differ by a factor of 2. The workfunction of the metal (in eV) is close t |
| Answer» 153.Surface of certain metal is first illuminated withlight of wavelength λ ,-350 nm and then, bylight of wavelength λ 2-540 nm. It is found thatthe maximum speed of the photo electrons intwo cases differ by a factor of 2. The workfunction of the metal (in eV) is close t | |