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If a voltage to an X-ray tube is increas...

If a voltage to an X-ray tube is increased to 1.5 times the minimum wavelength `(lamda_(min))` of an X-ray continuous spectrum shifts by `Delta lamda = 26` pm. The initial voltage applied to the tube is

A

`~~ 10 kV`

B

`~~ 16 kV`

C

`~~ 50 kV`

D

`~~ 75kV`

Text Solution

Verified by Experts

The correct Answer is:
B
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A voltage applied to an X -ray tube being increased eta = 1.5 times, the short-wave limit of an X -ray continuous spectrum shifts by Delta lambda = 26 pm . Find the initial voltage applied to the tube.

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Knowledge Check

  • The minimum wavelength lambda_min in the continuous spectrum of X-rays is

    A
    Proportional to the potential difference V between the cathode and anode.
    B
    Inversely proportional to potential differece V between the cathode and anode
    C
    Proportional to the square root of the potential difference V between the cathode and the anode.
    D
    Inversely proportional to the square root of the potential difference V between the cathode and the anode.

  • The voltage applied to the Coolidge X-ray tube is increased by 25%. As a result the short wave limit of continuous X-ray spectrum shifts by Delta lambda . The initial voltage applied to the tube is

    A
    `(hc)/(4e Delta lambda)`
    B
    `(hc)/(5e Delta lambda)`
    C
    `(4hc)/(5e Delta lambda)`
    D
    `(5hc)/(4e Delta lambda)`

  • An X-ray tube is operated at 50 kV. The minimum wavelength produced is

    A
    0.5 Å
    B
    0.75 Å
    C
    0.25 Å
    D
    1 Å

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