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According to photon theory of light whic...

According to photon theory of light which of the following physical quantities associated with a photon do not/does not change as it collides with an electron in vacuum

A

Energy and momentum

B

Speed and momentum

C

Speed only

D

Energy only

Text Solution

Verified by Experts

The correct Answer is:
C
Speed of photon is `3xx10^8 m//s` in vacuum.
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ERRORLESS-ELECTRON, PHOTON, PHOTOELECTRIC EFFECT & X -RAY-NCERT BASED QUESTIONS (Photon and Photoelectric Effect)
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  2. Consider the two following statements I and II, and identify the corre...

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  3. What is the momentum of a photon having frequency 1.5 xx 10^(13) Hz ?

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  4. A photon of wavelength 4400 Å is passing through vaccum. The effective...

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  5. A photon creates a pair of electron-positron with equal kinetic energy...

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  6. The linear momentum of a 3 MeV photon is

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  7. If the energy of the photon is increased by a factor of 4 , then its m...

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  8. An X-ray has wavelength of 0.010Å. Its momentum is

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  9. If the momentum of an electron is changed by Delta p , then the de - B...

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  10. A photon of wavelength 6630 Å is incident on a totally reflecting surf...

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  11. Derive the relationship of number of photons and frequency of two equa...

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  12. The minimum intensity of light to be detected by human eye is 10^(-10)...

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  13. A silver of radius 4.8 cm is suspended by a thread in the vacuum chamb...

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  14. Two metallic plates A and B , each of area 5 xx 10m are placed paralle...

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  15. An electron and a photon have same wavelength of 10^(-9) m. If E is th...

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  16. The wavelength of a 1 keV photon is 1.24 xx 10^(-9)m. What is the freq...

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  17. The energy of a photon of light of wavelength 450 nm is

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  18. If wavelength of photon and electron is same then ratio of total energ...

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  19. Photoelectric effect supports quantum nature of light because

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  20. The treshold wavelength for photoelectirc emission from a material ...

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