Physics, asked by shreejabs24, 7 months ago

3) whers a 6000 À°
light falls on the cathod of o
photo tell and produced photes emission of a
stopping potential of 0.8 0 is required
2 freequency of the light
ii
energy of the incident photos
work function of the Cathode material
in) threshold freequency
u) net energy of the electrons after it leaves the surface

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Answered by Anonymous
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12th

Physics

Dual Nature of Radiation and Matter

Photocell and Probability Interpretation to Matter Waves

The stopping potential for ...

PHYSICS

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Asked on December 30, 2019 by

Nayan Mithbavkar

The stopping potential for a photo cell depends

A

On the nature of the cathode and intensity of light

B

On both the intensity and frequency of incident light

C

Only on the intensity of light

D

On both the nature of the cathode and frequency of incident light

MEDIUM

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ANSWER

It is known that the stopping potential of a metal is the potential required to stop the fastest electron emitted from its surface due to the photoelectric effect.

If q

e

is the charge on the electron and V

o

is the stopping potential, then we have

q

e

V

o

=K

max

where K

max

is the maximum kinetic energy of the emitted electrons.

Recalling the photoelectric effect, we know that

K

max

=h(f−f

o

)

where hf

o

is the work function of the metal and f

o

is its threshold frequency. From the above two equations, it can be observed that the stopping potential of a metal depends on:

(i) frequency f of the incident light and

(ii) work function which in turn means the nature of the cathode (metal)...

Hope usefull..

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