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Thomson's Discovery of Electrons

X-rays are pr...

Question

X-rays are produced using molybdenum target at an angle applying accelerating voltage V. If molybdenum is replaced by tungsten, the cut off wavelength of X-rays produced will

A

Increase

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B

Decrease

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C

Remain same

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D

May change

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Solution

The correct option is C Remain same
Cutoff $λ = \frac{h c}{e V}$ .
So cutoff wavelength does not depend upon material.
So, the answer is option (C).

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