Only some IITs offer a B. Sc. degree in Physics. However many of them instead offer a B. Tech degree in Engineering Physics. Some others offer a combined BS-MS degree in physics. Whatever be the programme, you have to secure admission through the JEE Advanced itself.

Here is the list of IITs and the programmes related to Physics they offer:

IIT-BHU: Int. M. Tech. in Engineering Physics.
IIT-Bhuwaneshwar: No physics programme offered.
IIT Bombay: B. Tech. in Engineering Physics, also, B. Tech.-M. Tech. dual degree in Engineering Physics
IIT Delhi: B. Tech in Engineering Physics
IIT Dhanbad(ISM): B. Tech. in Engineering Physics, also, Int. M. Sc. in Applied Physics
IIT Gandhinagar: No physics programme available.
IIT Guwahati: B. Tech. in Engineering Physics.
IIT Hyderabad: B. Tech. in Engineering Physics.
IIT Indore: No physics programme available.
IIT Kanpur: B. S. in Physics
IIT Kharagpur: 5 year Int. M. Sc. in Physics.
IIT Mandi: No physics programme available.
IIT Madras: B. Tech. in Engineering Physics, also, Int. BS-MS in Physics
IIT Palakkad: No physics programme available.
IIT Patna: No physics programme available.
IIT Jodhpur: No physics programme available.
IIT Roorkee: B. Tech. in Engineering Physics, also, Int. M. Sc. in Physics
IIT Ropar: No physics programme available.
IIT Tirupati: No physics programme available.

Dear student

After studying Science at 10+2 level, aspirants who do not want to make a career in the field of Medicine and Engineering can consider pursuing BSc. Some of the top colleges for studying B.Sc in Physics in india are as follow

Loyola College, Chennai

St. Stephen’s College - Delhi

Miranda House, Delhi

Hansraj College, Delhi

Fergusson College, Pune

Madras Christian College (MCC), Chennai

Hindu College,Delhi

Sri Venkateswara College, delhi

Ramjas College, delhi

Hope this helps

All the best!!!