on The photoelectric work function fou a surface is 2.40 V. Light of wavelength 68004° shings given surface. Find the incident 4 threshold frequencies. Will there Le Shotsebeluic enission ou bot. ficvn: C = 3x108m/s. and I ev = 1.6 × 10-195₁ h = 6·6 X10-34Js.
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