Physics courses are notorious for being heavy on the theory, light on the application. The opposite is true of most engineering classes, so physiker is right in most respects. The most common example I would say is thermodynamics. Of course, there are a bunch of classes that you will be missing completely as an engineering major. As far as I'm aware, quantum mechanics, optics, and e&m theory aren't in the engineering curriculum.
Then again, this is from the perspective of an American. Just know that there are specific requirements you need to pursue physics research, you can't 'wing' it in research. You're second year, why can't you just take some extra classes (not sure if they have minors in India where I'm assuming you're from) in physics? If you do that you don't have much to worry about.
And yes, physics research is different than popular novels. It's tough and can be tedious, so be aware of that.