Question

The ratio of energy to frequency of electromagnetic radiation is equal to ______ .

Answer 1

• Planck's constant is a physical quantity that is the proportionality constant between the energy (E) of a charged atomic oscillator in the wall of a black body, and the frequency (v) of its associated electromagnetic wave.
• This relation between the energy and frequency is called the Planck constant (h).

$\mathrm{E}=\mathrm{hv}\mathrm{or}\frac{\mathrm{E}}{\mathrm{v}}=\mathrm{h}$ where E is the energy and v is the frequency.

• $\mathrm{h}=6.6260715\times {10}^{-34}\mathrm{J}.\mathrm{s},\mathrm{h}=4.135667662\times {10}^{-15}\mathrm{eV}.\mathrm{s}$

Hence, the ratio of energy to frequency of electromagnetic radiation is equal to Planck’s constant.