Class 12 NEET Physics Dual Nature of Matter and Radiation

According to Einstein’s photoelectric equation

1

2

mvmax2=hυ−ϕ0
where

1

2

mvmax2 x is the maximum kinetic energy of the emitted electrons,hυ is the incident energy and ϕ0 is the work function of the metal.

and
Divide (i) and (ii), we get

vmax12

vmax22

=

0.5

2

vmax1

vmax2

=√

0.5

2

=

1

2