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The work function of a substance is 4.0 ...

The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately equal to

A

220 nm

B

310 nm

C

540 nm

D

400 nm

Text Solution

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The correct Answer is:
2
`lambda "in"A^(0)=(12400)/(E)"in"eV`
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NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 1 (C.W)
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  6. A radiation of wave length 2500A^(0) is incident on a metal plate whos...

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

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

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

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  20. If the momentum of a photon is p, then its frequency is

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