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With what velocity must an electron trav...

With what velocity must an electron travel so that its momentum is equal to that of a photon with a wavelength of `5000Å(h=6.6xx10^(-34)Js,m_(e)=9.1xx10^(-31)` Kg)

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`mv=(h)/(lamda)impliesv=(6.6xx10^(-34))/(9.1xx10^(-31)xx5000xx10^(-10))=1450m//s`
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-PRACTICE EXERCISEX
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  15. When a mono chromatic point source of light is at a distance of 0.2m f...

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  16. The work function of a substance is 12.4 eV. The longest wavelength of...

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  18. The photoelectric threshold wavelength for a certain metal is 4000A^(@...

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  19. What P.D. must be applied to stop the fastest photo electron emitted b...

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