Physics

Check:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?t_source=paid&utm_source=google&utm_medium=cpc&utm_campaign=JEE_Main_2019_SN_India_Mob-Result&gclid=CjwKCAjwk7rmBRAaEiwAhDGhxHPEVNaIBcdxYZhwO_xYhUHgwph-k_kQAK4p9BM7xiEJwCrsWtsizBoCT_AQAvD_BwE

Dear Mathew,
Getting internship in astronomy or in core physics sector is very difficult to get in India. Only a few institution like IIS Bangalore, IIST Kerala, IIT Bombay and Madras provide the same. Because there are very few opportunities in astronomy sector. I am not sure about ISRO, DRDO and National Physical Laboratory. So, try to upgrade your profile for this and get the admission in a top notch college of India.

No, it is not compulsory that a student should have passed class 12th with more than 60% in physics, chemistry and maths, not with computer science because computer science is an additional subject but you just have to get more than 60% in PCM to get admission in any college for CSE.

Hi Renu,
As you have completed your graduation in B.Sc. Physics hons with 60% marks, so you are eligible to take admission in Hansraj College. No, entrance will be of moderate type. It will not be a tough entrance for M.Sc.

Hi HIMANSHI,
To get admission in biotechnology you need to appear for the engineering entrance exams for which you need mathematics paper. At the same time, biology is also required for biotechnology. Therefore, you can take PCM and biology as the extra subject.

Hi Amit, You can get an admission. Apply to all the regional colleges of your home state wherever you wish to go. I hope this helps. All the Best!