Hold at rest

Find the maximum wavelength of light in nano-meters that can cause photoelectric effect in silver? Enter the integer part of your answer.

Details And Assumptions:

• Planck's constant $$= 4.14 \times 10^{-15} \text{ eVs}$$.

• Speed of light $$=3\times 10^{8} \text{ m s}^{-1}$$.

• Work function of silver $$=4.7 \text{ eV}$$.

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