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The energy of the em waves is of the order of 15keV. To which part of the spectrum does it belong?

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By Expert Faculty of Sri Chaitanya
a
Ultraviolet rays
b
γ-rays
c
X-rays
d
Infra-red rays

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detailed solution

Correct option is C

As λ=hcEWhere the symbols have theri usual meanings. Here, E=15keV=15×103 V and hc=1240eVnm∴ λ=1240eVnm15×103eV=0.083nmAs the wavelength range of X -rays is from 1 nm to 10-3 so this wavelength belongs to X -rays.
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ctaimg

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