Hello Pooja,

No, it is not possible for a B.Sc Physics first year student to join B.Tech second year.  Only students who completes their Diploma in Engineering are eligible for Lateral Entry into B.Tech second year.

If you wish to join B.Tech then you can join B.Tech first year on basis of your 10+2 or equivalent exam from a recognized Board.  But your first year B.Sc Physics will be gone waste. If you are okay with it can go ahead with B.Tech first year.

May thus was helpful.

Best of Luck!!