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7 Initially a photon of wavelength falls on a photocathode and emits an electron of...

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7 Initially a photon of wavelength falls on a photocathode and emits an electron of maximum energy E If the wavelength of the incident photon is changed to 22 the maximum energy of the emitted electron becomes E2 The value of hC is h planck s constant and C speed of light 2 2 E E E E 2 1 2 2 2 2 3 E E 2 4 21 22 E2 E

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