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Momentum of a photon of wavelength λ is

1. h/λ
2. zero
3. hλ/c^2
4. hλ/c

Correct answer: h/λ

Solution

The momentum of a photon is given by the formula p = h/λ, where h is Planck's constant and λ is the wavelength of the photon. This is derived from the relationship between energy, momentum, and wavelength for photons.

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