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Light of wavelength 2475 Å is incident o...

Light of wavelength `2475 Å` is incident on barium. Photoelectrons emitted describe a circle of radius `100 cm` by a magnetic field of flux density `(1)/(sqrt(17)) xx 10^(-5) Tesla`.
Work function of the barium is (Given `(e )/(m) = 1.7 xx 10^(11)`)

A

1.8 eV

B

2.1 eV

C

4.5 eV

D

3.3 eV

Text Solution

Verified by Experts

The correct Answer is:
C
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