NEET-XII-Physics
44: X-rays
- #1For harder X-rays,
(a) the wavelength is higher
(b) the intensity is higher
(c) the frequency is higher
(d) the photon energy is higher.digAnsr: c,dAns : (c) the frequency is higher
(d) the photon energy is higher
Harder X-rays are the X-rays having low wavelengths. Since the frequency varies inversely with the wavelength, hard X-rays have high frequency.
Energy of a photon `` \left(E\right)`` is given by
`` E=\frac{hc}{\lambda }``
Here,
h = Planck's constant
c = Speed of light
`` \lambda `` = Wavelength of light.
Clearly, energy varies inversely with wavelength. Therefore, the energy of the photon will be higher for the hard X-ray.
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