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Electric Potential at a Point in Space Due to a Point Charge Q

What is work ...

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What is work Function?And also the kinetic energy of ejected electron

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Q. STATEMENT-1 : In photoelectric experiment the ejected electrons have same kinetic energy.
STATEMENT-2 : According to Einstein kinetic energy of every ejected electron is the difference in the energy of a photon and the work function of the metal.

Q. Light of wavelength

200 n m

shines on an aluminium,

4.20 e V

is required to eject an electron. What is the kinetic energy of the fastest ejected electrons?

Q. Light of wavelength

1800 \circ A

ejects photoelectrons from plate of a metal whose work function is

2 e V

. Electron ejected from the plate with maximum kinetic energy

Q. The kinetic energy of the ejected electrons in photoelectric effect is:

Q. The kinetic energy of the photoelectrons ejected from the metal surface

A

K

when required radiation is incident. If the same radiation is capable of ejecting the electrons from the metal

B

with higher work function, then the kinetic energy of the photoelectrons -

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Electric Potential at a Point in Space Due to a Point Charge Q

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