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Huygens' Principle

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Find number of electrons emitted per second by a 24 W source of monochromatic light of wavelength 6600 10-10 assuming 3% efficiency for photoelectric effect h= 6.610-34

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Q. Find the number of electrons emitted per second by a

24 W

source of monochromatic light of wavelength

6600 A^{o}

3

% efficiency for photoelectric effect(Take

h = 6.6 \times 10^{- 34} J s

)

Q. Find the number of photon emitted per second by a

25 w a t t

source of monochromatic light of wavelength

6600 o A

. What is the photoelectric current assuming

3 %

efficiency for photoelectric effect?

Find the number of photons emitted per second by a 24 W source of monochromatic light of wavelength 6600 $^{\circ}$ :

Q. A 100 W point source emits monochromatic light of wavelength

6000 o A

. Calculate the total number of photons emitted by the source per second.

Q. The number of photons emitted per second by a 62 W source of monochromatic light of wavelength 4800

A^{0}

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