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Which of the following statements is not...

Which of the following statements is not correct?

A

Photographic plates are sensitive to infrared rays.

B

Photographic plates are sensitive to ultraviolet rays.

C

Infra-red rays are invisible but can cast shadows like visible light.

D

Infrared photons have more energy than photons of visible light.

Text Solution

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The correct Answer is:
D
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TARGET PUBLICATION-ELECTRONS AND PHOTONS-Competitive Thinking
  1. The maximum kinetic energy of the photoelectrons depends only on

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  2. The velocity of photon is proportional to (where v is frequency)

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  3. Which of the following statements is not correct?

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  4. If E and P are the energy and the momentum of a photon respectively,th...

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  5. is the wavelength of photon of energy 35 ke V.

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  6. The maximum wavelength of radiation that can produce photoelectric eff...

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  7. The momentum of a photon is 3.3xx10^(-29)kg-m/s. Its frequency will b...

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  8. A photon of wavelength 4400 Å is passing through vaccum. The effective...

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  9. The momentum of a photon is 2 xx 10^(-16) gm - cm//sec. Its energy is

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  10. If the energy of a photon corresponding to a wavelength of 6000 Å is ...

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  11. If we express the energy of a photon in KeV and the wavelength in angs...

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  12. A metal surface of work function 1.07 eV is irradiated with light of w...

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  13. The work function of metal is 1 eV. Light of wavelength 3000 Å is inc...

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  14. Energy from the sun is recived on earth at the rate of 2 cal per cm^(2...

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  15. when a monochromatic point source of light is at a distance 0.2 m from...

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  16. When a metal surface is illuminated by light wavelengths 400 nm and 25...

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  17. The velocity of the most energetic electrons emitted from a metallic s...

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  18. A modern 200 W sodium street lamp emits yellow light of wavelength 0.6...

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  19. Ultraviolet light of wavelength 300nn and intensity 1.0Wm^-2 falls on ...

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  20. The number of photons falling per second on a completely darkened plat...

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