Hello Onkar Soni,

These are few college that offer B.Sc. in Astrophysics-

• JNTU College of Engineering, Hyderabad.
• Indian Institute of Astrophysics, Bangalore.
• Osmania University.
• Indian Institute of Science, Bangalore .
• Punjab University.
• Institute of Fundamental Research, Tamil Nadu .
• Astrophysics, Tata Institute of Fundamental Research, Pune.

• Indian institute of astrophysics , Bangalore 
• gulags University -Gulbarga-West
• Karanataka city college - Bangalore
• R v centre for cognitive technologies Bangalore
• St Xavier's college Kolkata
• Rashtrasant tukdoji maharaji Nagpur University - Nagpur
• Saha institute of nuclear physics -kolkata
• Institute of physics - Bhubaneswar Orissa
• Punjab University
• College of science and technology - Visakhapatnam
• Indian Institute of geomagnetic
• Bangalore university
• University of Lucknow
• Mahatma Gandhi university
• Osmania university
• Patiala university
• University of Chennai
• University of Kolkata
• Shivaji university
• S N Bosenational centre of basic sciences