Questions
If a voltage applied to an X-ray tube is increased to 1.5 times the minimum wavelength () of at X-ray continuous spectrum shifts by = 26 pm. The initial voltage applied to the tube is
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a
≈ 10 kV
b
≈ 16 kV
c
≈ 50 kV
d
≈ 75 kV
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Correct option is B
λmin=hceV⇒λ1hceV1 and λ2=hceV2∴Δλ=λ2−λ1=hce1V2−1V1.Given V2=1.5V1on solving we get V1=16000 volt =16kV.Similar Questions
The energy of a photon of characteristic x-ray from a Coolidge tube comes from
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