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Q.

The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength is:

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a

b

c

d

answer is A.

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Detailed Solution

Concept: The photoelectric threshold wavelength of silver is

3250 \times 1 0^{- 10}

The correct option is

. 6 \times 1 0^{16} m / s

.The maximum kinetic energy is given as,

where

threshold wavelength
or

Here,

So,

Hence, the correct option is 1.

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The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength is: