Q. Photoelectrons are being obtained by irradiating zinc by a radiation of 3100 Å. In order to increase the kinetic energy of ejected photoelectrons.
  • (A) the intensity of radiation should be increased.
  • (B) the wave length of radiation should be increased.
  • (C) the wavelength of radiation should be decreased.
  • (D) both wavelength and intesity of radiation should be increased.
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✅ Correct Answer: (C) the wavelength of radiation should be decreased.

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