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It is found that photosynthesis starts i...

It is found that photosynthesis starts in certain plants when exposed to the sunlight but it does not start if the plant is exposed only to infrared light. Explain.

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PHYSICS GALAXY - ASHISH ARORA-PHOTOELECTRIC EFFECT AND MATTER WAVES-Discussion question
  1. Wjhen the speed of a particle doubles, its momentum doubles, and its k...

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  2. It is found that yellow light does not eject photoelectrons from a met...

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  3. It is found that photosynthesis starts in certain plants when exposed ...

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  4. Photon A has twice the energy of photon B. (a) If the momentum of A ...

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  5. If electromagnetic radiation is made up of quanta, why don't we detect...

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  6. The threshold wavelength of a metal is ( lambda0). Light of wavelength...

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  7. Consider the de Broglie wavelength of an electron and a proton. Which ...

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  8. If an electron has a wavelength, does it also have a colour?

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  9. Human skin is relatively insensitive to visible light, but ultraviolet...

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  10. Do all electrons emitted in the photoelectric effect have the same kin...

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  11. If you shine ultraviolet light on an isolated metal plate, the plate e...

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  12. Is it always true that for two sources of equal intensity, the number ...

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  13. The wave theory of radiation cannot explain………. Existence of threshold...

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  14. The photoelectros emitted by an illuminted surface have a maximum kine...

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  15. The threshold frequencies for photoemission for three metals numbered ...

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  16. Is p= E/c valid for electrons?

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  17. Photon A is from an ultraviolet tanning lamp and photon B is from a te...

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  18. Of the following statement about the photoelectric effect, which are t...

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  19. In an experiment on photoelectric effect, a photon is incident on an e...

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  20. Can we find the mass of a photon by the definition p =mv?

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