A radioactive source emits X–rays of very short wavelength (10 -13m ) what is the frequently of these rays?

Assessment: JAMB UTME - Physics - 2015 Subject: Physics

Question 1 Report

A radioactive source emits X–rays of very short wavelength (10 -13m ) what is the frequently of these rays?
Answer Details
The frequency of the X-rays emitted by the radioactive source can be calculated using the formula: frequency = speed of light / wavelength The speed of light is approximately 3 x 10^8 m/s. Substituting the given wavelength of 10^-13 m into the formula, we get: frequency = 3 x 10^8 / (10^-13) = 3 x 10^21 Hz Therefore, the frequency of the X-rays emitted by the radioactive source is 3 x 10^21 Hz. Option C, which states 3 x 10^21 Hz, is the correct answer. Option A, B, and D are incorrect because they do not match the calculated frequency.

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