What is the effect on the maximum velocity of the emitted electron if the wavelength of the incident light is decreased?

Explanation

According to Einstein's photoelectric equation
`K_(max)=(hc)/lambda-phi_0 But K_(max)=1/2mv_(max)^2`
`:. 1/2mv_(max)^2=(hc)/lambda-phi_0 or v_(max)^2=(2hc)/(mlambda)-(2phi_0)/m`
or `v_(max)^2 prop 1/lambda or v_(max) prop 1/(sqrt(lambda))`
It means, as the wavelength `(lambda)` of the incident light decreases, the maximum velocity of emitted photoelectrons increases.