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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsX-raysEasy2 minPYQ_2006

PhysicsEasysingle choice

Hard X-rays for the study of fractures in bones should have a minimum wavelength of $1 0^{- 11} m$ . The accelerating voltage for electrons in X-ray machine should be

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Solution:

$: λ_{m i n} = \frac{h c}{e V} = \frac{1.242 \times 1 0 ^{- 6}}{V} V = \frac{1.242 \times 1 0 ^{- 6}}{1 0 ^{- 11}} = 124.2 kV$ The accelerating voltage for electrons in X-ray machine should be greater than $124.2 kV$ .

Stream:AIIMSSubject:PhysicsTopic:Modern PhysicsSubtopic:X-rays

⏱ 2mℹ️ Source: PYQ_2006

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