Question:
If the work function of two metals x and y are 4.17ec and 8.24×10^-19 respectively, then for which metal lesser amount of energy will be required to emit an electron
Answer:
X= 4.17 eV
Y = 8.24×10-19 J
since 1 J = 1.6×10-19 eV
therefore Y = 5.15 eV
for X metal lesser amount of energy will be required to emit an electron.
Reason:
the minimum amount of energy required by an electron to just escape from the metal surface is called work function of the metal.
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