Question

# When the accelerating voltage in an X-ray tube is doubled, the wavelength of the X-rays is...

When the accelerating voltage in an X-ray tube is doubled, the wavelength of the X-rays is

a. Increased to twice the original value

b. Is increased to four times the original value

c. Decreased to one-half the original value

d. Decreased to one-forth its original value

Explain

#### Homework Answers

Answer #1

Solution:

Using conservation of energy

=> e V = hc/wavelength

We can say voltage is inversely dependent on wavelength

=> wavelength = K/V where k is a constant

=> when V is doubled wavelength will decrease by one half

Option c is right

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