Which formula represents energy (E) of a photon?

  1. \(E=h\nu\)
  2. \(E=\frac{hc}{\lambda}\)
  3. \(E=\frac{h\nu}{2}\)
  4. Both 1 and 2

Answer (Detailed Solution Below)

Option 4 : Both 1 and 2
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Detailed Solution

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Photons are particles in the light that are associated with a definite amount of momentum and energy.

The total energy (E) possessed by a photon is given by:

\(E=h\nu\)

where h is the Planck's constant and = 6.62 × 10-34 J s

n is the frequency of the photon 

\(Frequency=\frac{c}{\lambda}\\ \therefore\;\; E=\frac{hc}{\lambda}\)

Here c is the velocity of light and l is the wavelength of light.

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