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Light of two difference efrequencyies,wh...

Light of two difference efrequencyies,whose phtothns have energies 1 eV and 2.5 eV respectively successively illuminate a metal of work function 0.5 eV.Thge ratio of maximum speeds of the emitted electrons will be

A

`1:5`

B

`1:4`

C

`1:2`

D

`1:1`.

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MODERN PUBLICATION-UNIT TEST -07-EXERCISE
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  2. Einstein's photoelectric equation is expressed as

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  3. Light of two difference efrequencyies,whose phtothns have energies 1 e...

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  4. The maximum velocity of an elecron ejected from a photoelectric emitte...

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  5. When radiation is incident on a photoelectron emitteer,the stopping po...

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  7. If c is velocity of light ,then momentum of a photon of frequency is

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  8. The energy of a photon is 3 xx 10^(-19) J.Its momentum is

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  9. The energy E and momentum p of a photon is given by E=h v and p= h//la...

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  10. The de-Broglie wavelength of an elecrtron mov ing with a speed of 6.6 ...

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  11. The wavelength of an electron moving with a velocity of 500 km s^(-1) ...

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  12. The de-Broglie wavelength lambda of a particle is related to ites kine...

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  17. An electron is accelerated through a potential difference of 1,00,000V...

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