Question

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

• A. Both metals A and B will emit photo-electrons
• B. Metal B will not emit photo-electrons
• C. Both metals $A$ and $B$ will not emit photo-electrons
• D. Metal A will not emit photo-electrons

Answer 1

Answer: (D)

Metal A will not emit photo-electrons

Answer 2

The correct answer is (D) : Metal A will not emit photo-electrons