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A physicist wishes to eject electrons by...

A physicist wishes to eject electrons by shining light on a metal surfac. The light source emits light of wavelenght of 450 nm. The table lists the only available metals and their work functions.
`{:("Metal",W_(0)(eV)),("Barium",2.5),("Lithium",2.3),("Tantalum",4.2),("Tungsten",4.5):}`
Which option correctly identifies the metal that will produce the most energetic electrons and their energies?

A

Lithium, 0.45 eV

B

Tungsten 1.75 eV

C

Lithium, 2.30eV

D

Tungsten, 2.75 eV

Text Solution

Verified by Experts

The correct Answer is:
A
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