can I do coding along with my bsc physics (Hons.) and get a job in a IT company?
Yes you may do Coding, develop skills in Competitive Programming and Software Development as well as Certifications in Web Development, Data Analytics and Machine Learning, maybe Interships and Projects would greatly help your purpose.
However, for stronger prospects in the IT, Services or Software Industry, you may perhaps pursue MCA after B.Sc. perhaps from some of the Top NITs or Central Universities.