ECE(communication) or CSE !!

le me

I have currently given entrance exams for b.tech engg. & now my results are out.It seems I can opt for Electronics & communication engg. or CSE.

I love electronics and know it is taught in both ECE and CSE. But I cannot decide which to choose.

After my b.tech I want to engage in research after some more degrees(I guess! Help ME here too!!).Eventually My dream is to get a PHD. in Physics or something related to it.

Which among ECE/CSE is best suited for my tastes?
I am just a 10+2 pass out and have no experience in this things.

Please explain thoroughly.
Thank you for your time and generosity.