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Two identical photocathodes receive ligh...

Two identical photocathodes receive light of frequencies `v_(1) and v_(2)`. If the velocities of the photoelectrons (of mass m) coming out are respectively `v_(1) and v_(2)`. then

A

`f_1-f_2=(m(v_1^2-v_2^2))/(2h)`

B

`f_1+f_2=(m(v_1^2-v_2^2))/(2h)`

C

`f_1-f_2=(m(v_1^2+v_2^2))/(2h)`

D

`f_1+f_2=(m(v_1^2+v_2^2))/(2h)`

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AAKASH INSTITUTE ENGLISH-DUAL NATURE OF RADIATION AND MATTER -ASSIGNMENT SECTION A. Objective (Only one answer)
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  2. The threshold frequency for a metallic surface correponds to an energy...

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  3. Two identical photocathodes receive light of frequencies v(1) and v(2)...

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  9. The work function of a certain metal is 2.3 eV. If light of wave numbe...

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  10. When the electromagnetic radiations of frequencies 4 xx 10^(15) Hz and...

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  11. If the velocity of an electron is doubled, its de-Broglie frequency wi...

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  12. The duration of a laser pulse is 10^(-8) s. The uncertainly in its ene...

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  14. How many photons are emitted by a laser source of 5 xx 10^(-3) W ope...

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  15. The number of photons emitted by a 60 W bulb per second, if 10% of the...

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  16. The momentum of a photon having energy equal to the rest energy of an ...

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  18. Find the ratio of de Broglie wavelength of molecules of hydrogen and h...

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  19. A particle which has zero rest mass and non - zero energy and momentum...

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  20. Dual Nature Of Electromagnetic Radiation

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