Answer:
The wavelength is 0.39 angstroms.
(A) is correct option.
Explanation:
Given that,
Gamma ray emitted from a nucleus during radioactive decay may have an energy = 320 keV
We need to calculate the wavelength
Using formula of energy
[tex]E=\dfrac{hc}{\lambda}[/tex]
[tex]\lambda=\dfrac{hc}{E}[/tex]
Where, E = energy
h = plank's constant
c = speed of light
Put the value into the formula
[tex]\lambda=\dfrac{6.6\times10^{-34}\times3\times10^{8}}{320\times1.6\times10^{-19}}[/tex]
[tex]\lambda=0.39\ \AA[/tex]
Hence, The wavelength is 0.39 angstroms.
