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  4. If the two metals A and B are exposed to radiation of wavelength 350 mm. The work functions of metals A and B are 4.8 eV and 2.2 eV. Then choose the correct option.

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Q. If the two metals $A$ and $B$ are exposed to radiation of wavelength $350 \,mm$. The work functions of metals $A$ and $B$ are $4.8 \,eV$ and $2.2\, eV$. Then choose the correct option.

JEE MainJEE Main 2023Dual Nature of Radiation and Matter

Solution:

Correct answer is (d) Metal A will not emit photo-electrons