An X-ray tube operated at 30 kV emits a continuous X-ray spectrum with a short wavelength limit λ= 0.414x10^-8
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An X-ray tube operated at 30 kV emits a continuous X-ray spectrum with a short wavelength limit λ= 0.414x10^-8

[From: ] [author: ] [Date: 12-03-02] [Hit: ]
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An X-ray tube operated at 30 kV emits a continuous X-ray spectrum with a short wavelength limit λ= 0.414x10^-8 cm. Calculate Plank’s constant.

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eV = h c/ λ

1.6e-19*30e3 = h *3e8 / 0.414e-10

h = 6.624e-34 Js
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