Home » Classroom » JAMB Physics 2000 Question

If the frequency of an emitted x-ray is 1 6 x 1... - JAMB Physics 2000 Question

If the frequency of an emitted x-ray is 1.6 x 1016Hz, the accelerating potential is?
[e = 1.6 x 10-19C, h = 6.63 x 10-34Js]
A
6630.0V
B
663.0V
C
66.3V
D
6.6V
correct option: c

Energy imparted by the accelerating system = e x V, where V is the accelerating potential; and this energy is equal to the energy of the X-ray, give by hf

e x V = hf

∴ V = hf/e

(6.63 x 10-34 x 1.6 x 10-16)/1.6 x 10-19

= 6.63 x 10 = 66.3V

Please share this, thanks:

#JAMB #JAMB

Add your answer

Notice: Please post responsibly.

No responses