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Estimate the speed with which electrons ...

Estimate the speed with which electrons emitted from a heated emitter of an evacuated tube impinge on the collectro maintained at a potential difference of 500 V with respect to the emitter. Ignore the small initial speeds of the electrons. The specific charge of the electrons i.e. its e/m is given to be `1.76 xx 10^11 C kg^-1`.

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MODERN PUBLICATION-UNIT TEST -07-EXERCISE
  1. Estimate the speed with which electrons emitted from a heated emitter ...

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  2. The photon of frequency v has a momntum associated with it .If c is th...

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  3. The time taken by a photoelectron to come out after the photon strikes...

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  4. Work function of a metl surface is 4.2 eV. The maximum wavelength whic...

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  5. Sodium and copper have work functions 2.3 eV and 4.5 eV, respectively....

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  6. A photocell is illuminated by a small bright source placed 1 m away .w...

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  7. According to Einstein's photoelectric equation, the graph between kine...

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  8. The surface of a metal is illuminted with the light of 400 nm.the kine...

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  9. The threshold freuency for a metallic surface corresponds to an energy...

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  10. This question has statement - 1 and statement - 2 of the four choice g...

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  11. Two identical photocathodes receive the light of frequencies f1 and f2...

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  12. The anode vollage of a photocell is kept fixed . The wavelength lambda...

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  13. The de-Broglie wavelength of a tennis ball of mass 60 g moving wiht a ...

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  14. If the kinetic energy of a free electron doubles,its de-Broglie wavele...

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  15. A radiation of energy E falls normally on a perfecly reflecting surfac...

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  16. Direction:Answer the MCQ no.15 to 17 on the basis of the folowing para...

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  17. Wave property of electron implies that they will show diffraction effe...

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  18. Wave property of electron implies that they will show diffraction effe...

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  19. Wavelength of the radiation of freuquency 100 Hz is :

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  20. Planck's constant has the dimetnsion of

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  21. The value of Planck's constant is

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