Question

167. Calculate the velocity of ejected electron from the metal
surface when light of frequency 2 x 10^15 Hz fall on the
metal surface and the threshold frequency is 7 * 10¹⁴ Hz
for metal ?
(a) 1.37 x 10^6
(b) 1.26 x 10^6
(c) 1.45 10^7
(d) 1.37 x 10^7
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Answer 1

Answer:

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