Normally, there is good scope for Physical Science with Computer Science at present and future as well. Since, you have stated that you have not had much knowledge in the field of Physical Science and Computer. I suggest you to develop your subject with Technical skill so that you can get a good job with high salary package. It is better that you can apply for Master degree in relevant specialization to get subject and Technical Knowledge. Here, I have listed the course which you can apply for after completing Physical Science.
Some good options are
1- Nimcet ( Mca from nits )
2 — Jam
3 — Tifr
4 — jest
5 — Upsc
6- Ssc
7 — Your startup ( Specially If you are in universities like Du where you find lot of exposure )
8 — Cat