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If The Frequency Of An Emitted X-ray Is 1.6 X 1016Hz; The Accelerating Potential Is? [e = 1.6 X 10^−19J, H = 6.63 X 10^-34Js] - Erudites Academy
Categories: Physics JAMB

If the frequency of an emitted x-ray is 1.6 x 1016Hz; the accelerating potential is? [e = 1.6 x 10^−19J, h = 6.63 x 10^-34Js]

A. 6630.0V
B. 663.0V
C. 66.3V
D. 6.6V

Correct Answer:

Option C = 66.3V

Explanation
Given f = 1.6 x1016Hz, h = 6.63 x 10−39Js

e = 1.6 x 10−19C, V = ?

V = we=hf/e = 1.6×1016×6.63×1034/1.6×10−19
= 66.3V

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