Facebook: double clicking on photos?

[Foo]

If you double click on a photo on Facebook (when your on mobile version) will you like the photo? Also, lets say you like a photo and click on the part that says 20 (or however many) people liked this, will your name come up? Will it show that you liked it to other users but not to you? Because I think I liked a post but when I clicked on the so and so many liked my name did not come up. Sorry for the confusing question(s) it's just been bugging me.

[Wendy]

yes it will