Related to photoelectric effect, in Column I, some physical quantitative change while in Column II effect of these changes are given. Match the entries of Column I with the entries of Column II

	Column I		Column II
I.	Intensity of incident light changes keeping frequency same.	a.	$K_{\max }$ of emitted photo-electrons changes
II.	Frequency of incident light changes	b.	Stopping potential changes
III.	Target material changes	c.	Saturation current changes
IV.	KE of photoelectrons as they reach the collector	d.	Time delay in emission of photoelectrons changes

 

If intensity changes, then number photons/time incident on the metal surface change and hence number of  photoelectrons liberated change, so saturation photocurrent changes. Stopping potential and $K_{\max }$  will remain the same

ii) From $e{V}_0=hf-\varphi and{K}_{\max }=hf-\varphi$  If $f$ changes, then $V_{0}and{K}_{\max }$  change.

iii) From$e{V}_0=hf-\varphi and{K}_{\max }=hf-\varphi$  If target material changes, then $\varphi$  changes , then$V_{0}and{K}_{\max }$changes.

iv) If we change the potential difference between emitter and collector, then time taken for electrons to eject changes.

$i\to c ; ii\to a,b ; iii\to a,b ; iv\to d$