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The fast moving electrons are emitted by...

The fast moving electrons are emitted by subjecting the metal surface to a very strongelectric field. This process is termed as

A

Field emission

B

thermionic emission

C

secondary emission

D

photoelectric emission

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CHETANA PUBLICATION-Dual Nature of Radiation and Matter-EXERCISE
  1. Which of the following phenomena exhibits particle nature of light

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  2. Polychromatic (containing many different frequencies) radiation is use...

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  3. The fast moving electrons are emitted by subjecting the metal surface ...

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  4. Threshold frequency for photoelectric effect on sodium corresponds to ...

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  5. The photoelectric work function of the emitter of a photocell is 3.63e...

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  6. Thede-Broglie wave corresponding to a particle of mass m and velocity ...

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  7. The following particles are moving with the same speed. The shortest w...

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  8. A photon and an electron have the same wavelength then, the velocity o...

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  9. The de-Broglie wavelength lambda. of a particle isrelated to its kinet...

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  10. The de Broglie wavelength of 1 mg grain of sand blown by a wind at the...

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  11. Ana-particle and alpha- protonare accelerated through same p.d. The r...

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  12. If alpha-particle and a proton has same K.E. then the ratio of their w...

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  13. Wavelength of an electron accelerated by potential difference of 'V' v...

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  14. An electron is accelerated through a potential difference of 150 V. Fi...

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  15. An electron is accelerated through a potential difference of 100,000 V...

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  16. The wavelength of a particle of mass m and energy EK will be

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  17. A photocell is used to automatically switch on the street lights in th...

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  18. An electron, a proton, α -particle and a hydrogen atom are moving with...

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  19. The de-Broglie wavelength of a particle of kinetic energy Ek is lambda...

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  20. The hypothesis that material particle in motion has dual properties of...

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