What is right on the picture or in the picture?
Just remember: if you want to say who a photograph shows, use in the picture. If something external is touching a photograph, use on the picture. I hope this helps.
What is the significance of the picture in the news report?
A photograph of it is just what a newspaper editor wants. A photograph of a happening helps the readers in many ways. It provides proof that the event really happened, since the readers can see it with their own eyes. It also takes the readers there, and lets them see the setting in which the event happened.