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

The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong?
  1. Infra-red rays
  2. Ultraviolet rays
  3. γ -rays
  4. X-rays

Solution

Wavelength of the ray
λ=hcE=1240015000=0.826 Å
X-ray wavelengths are in the range 0.5 – 2.5 Å, so it is an X-ray.

Asked in: NEET 2015 (Phase 2)

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