Calculate the energy of light having a wavelength of 395 nm. show work

Calculate the energy of light having a wavelength of 395 nm.
show work

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  1. Answer: [tex]5.032\times 10^{-19}\ J[/tex]

    Explanation:

    Given

    The wavelength of the light is [tex]\lambda =395\ nm[/tex]

    Energy associated with a photon(light) is given by [tex]E=\frac{hc}{\lambda}[/tex]

    where, [tex]h=\text{Planck constant}[/tex]

    [tex]c=\text{speed of light}[/tex]

    [tex]\Rightarrow E=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{395\times 10^{-9}}\\\\\Rightarrow E=5.032\times 10^{-19}\ J[/tex]

    Therefore, the energy associated with the light is [tex]5.032\times 10^{-19}\ J[/tex]

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