WBCS.LIVE practice 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 statement(s) is/are not correct?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. The wavelength of X-ray photon is less than the wavelength of visible radiation photon.
  2. Both the photons have different energies.
  3. The speeds of both the photons in vacuum are different.
  4. The frequency of X-ray photon is higher than the frequency of visible radiation photon.

Correct answer and explanation

Correct answer: The speeds of both the photons in vacuum are different.