Light of wavelength 3000 Aº falls on a metal surface having work function 2.3 eV. Calculate the maximum velocity of ejected electrons. J.s., (Planck's constant h = 6.63 × 10-34 Velocity of light c = 3 × 108 m/s, mass of 31 an electron = 9.1 × 10-³1 kg)
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