How to make this effect?

[deaconpt]

Hello,

I have no idea what this effect is called, so i will post an image, how can I do that shadow effect?

thanks

[iDad]

Go to use drop shadow option very self explanatory once your there

[deaconpt]

Thanks for the reply iDad, but it's not the blue rectangle that I want to know, its the 1st image, the one that looks like a cut in the paper and something comes out of it.

[sprucemagoo1]

shadow.psd
This file shows the easiest way of getting this imo:-