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The photoelectric threshold wavelength o...

The photoelectric threshold wavelength of silver is `3250 xx 10^(-10) m`. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength `2536 xx 10^(-10) m` is
`(Given h = 4.14 xx 10^(6) ms^(-1) eVs` and `c = 3 xx 10^(8) ms^(-1))`

A

` 0 .6 xx 10 ^( 6) ms ^ ( -1 ) `

B

`61 xx 10 ^( 3 ) ms ^ ( - 1 ) `

C

`0.3 xx 10 ^( 6 ) ms ^ ( -1 ) `

D

` 6 xx 10 ^( 5 ) ms ^ ( -1 ) `

Text Solution

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The correct Answer is:
A, D
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MOTION-PHOTOELECTRIC EFFECT -EXERCISE - 3 SECTION -A (Previous Year Problems (NEET ))
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  14. When the energy of the incident radiation is increased by 20 % , kinet...

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  15. When a metallic surface is illuminated with radiation of wavelength la...

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  16. An electron of mass m and a photon have same energy E. The ratio of de...

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  17. Photons with energy 5 eV are incident on a cathode C in a photoelectri...

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  18. The photoelectric threshold wavelength of silver is 3250 xx 10^(-10) m...

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  19. An electron of mass m with an initial velocity vec(v) = v(0) hat(i) ...

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  20. When the light of frequency 2 v(0) (where v(0) is threshold frequency)...

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