MCQ
For harder $X-$rays:
- AThe wavelength is higher.
- BThe photon energy is higher.
- CThe frequency is higher.
- ✓$B$ and $C$
✓
Answer
Correct option: D.
$B$ and $C$
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 $(E)$ is given by
$\text{E}=\frac{\text{hc}}{\lambda}$
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.
Energy of a photon $(E)$ is given by
$\text{E}=\frac{\text{hc}}{\lambda}$
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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