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If the energy of a photon corresponding ...

If the energy of a photon corresponding to a wavelength of `6000 Å is 3.32 xx 10^(-19) J` , the photon energy for a wavelength of `4000 Å` will be

A

`1.11 xx 10^(-19)j`

B

`2.22 xx 10^(-19)j`

C

`4.44 xx 10^(-19)j`

D

`4.8 xx 10^(-19) j`

Text Solution

Verified by Experts

The correct Answer is:
4
`E=hc//lambdaorEprop1//lambda,so E_(2)=E_(1)xxlambda_(1)xxlambda_(2)`
`=3.2xx10^(-19)xx6000//4000=4.8xx10^(=-19)j.`
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NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 1 (C.W)
  1. If the energy of a photon corresponding to a wavelength of 6000 Å is 3...

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  2. The photo electric threshold wavelength of Tungsten is 2300 Å. The ene...

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  3. Lights of two different frequencies whose photons have energies 1 and ...

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  4. The work function of a substance is 4.0 eV. The longest wavelength of ...

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  5. The threshold wavelength for emission of photoelectrons from a metal s...

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  6. The frequency of a photon associated with an energy of 3.31eV is ( giv...

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  7. A radiation of wave length 2500A^(0) is incident on a metal plate whos...

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  8. The work function of a metal is 2.5eV. The maximum kinetic energy of t...

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  9. A metal of work function 2.5 eV is irradiated by light. If the emitted...

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  10. The work function of nickle is 5eV. When light of wavelength 2000A^(0)...

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  11. A photocell is illuminated by a small bright source places 1 m away w...

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  12. The threshold wavelength for a surface having a threshold frequency of...

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  13. Two photons of energies twice and thrice the work function of a metal ...

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  14. The momentum of a photon is 33 xx 10^(- 29) kg - m//sec. Its frequency...

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  15. The energy of a photon of wavelength lambda is given by

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

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  17. The rest mass of the photon is

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  18. The momentum of the photon of wavelength 5000 Å will be

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  19. The momentum of a photon of energy will be

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  20. A photon in motion has a mass

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