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How many electron- volt make one joule?...

How many electron- volt make one joule?

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Since, 1 eV `=1.6 xx 10^(-19)` J
1 J `=1/(1.6 xx 10^(-19))eV = 6.25 xx 10^(18)` eV.
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MBD -HARYANA BOARD-DUAL NATURE OF MATTER AND RADIATIONS-OBJECTIVE TYPE QUESTIONS
  1. How many electron- volt make one joule?

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  2. The wavelength of a wave with frequency 10^14 Hz will be :

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  3. If threshold wavelength for sodium is 6800Å then the work function wil...

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  4. For which of the following stopping potential required is maximum ?

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  5. The de-Broglie waves associated with an electron accelerated through a...

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  6. The wavelength of an electron of energy 10 keV will be :

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  7. If a proton and electron have the same de Broglie wavelength, then

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  8. The de-Broglie waves associated with an electron moving under a potent...

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  9. The rest mass of the photon is

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  10. When a proton is accelerated with 1 volt potential difference, then it...

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  11. Which of the following has the largest de Broglie wavelength (all have...

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  12. Plancks' constant has the dimensions of

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  13. Light of wavelength 4000 Å falls on a photosensitive plate with photoe...

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

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  15. Stopping potential for which will be minimum ?

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  16. de-Broglie wavelength associated with an electron at V potential diffe...

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  17. Which of the following has minimum stopping potential?

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  18. The de-Broglie wavelength associated with a particle of momentum p is ...

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