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Question
A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct?
Options:
A .  The wavelength of X-ray photon is less than the wavelength of visible radiation photon.
B .  Both the photons have different energies.
C .  The speeds of both the photons in vacuum are different
D .  The frequency of X-ray photon is higher than the frequency of visible radiation photon.
Answer: Option C
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