A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of...

WAEC 1990

A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of the emitted electrons is 1.5OeV, calculate the work function of the metal.

A. 0.22eV
B. 4.59eV
C. 5.38eV
D. 8.38eV
E. 10.32eV

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Correct Answer: Option C

Explanation

Work function = Total energy - kinetic Energy
= 6.88 - 1.50 = 5.38 ev

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A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of...

Correct Answer: Option C

Explanation

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