Light of wavelength 2475 
is incident on barium. Photoelectrons emitted describe a circle of radius 100 cm by a magnetic field of flux density 
Tesla. Work function of the barium is (Given 
A
1.8 
B
2.1 
C
4.5 
D
3.3 
Text Solution
Verified by ExpertsThe correct answer is:
C
Radius of circular path described by a charged particle in a magnetic field is given by 
; where 
is Kinetic energy of electron
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