Department of Physics is one of the departments which offered Pre-University Courses when the college was revived in 1966. The Under-Graduate Programme was started in 1972. Since its inception, the Department has all the basic infrastructural facilities like laboratories, fully equipped with basic amenities and instruments required.

Sensing and responding to the ever-growing demands, the Department became a full-fledged P.G. Department in 1992 and a Research Department in 2009. At present, the Department has thirty five faculty members and seven non-teaching staff. Headed by Dr. C. Ravi Dhas, the Department is an active beehive of research in a wide variety of frontier with high quality Undergraduate, Postgraduate, M.Phil., and Doctoral programmes. The research programmes of the Department cover a number of areas like Material Science, Solid State Physics, Nonlinear Dynamics, Thin Films, Electronics, Renewable Energy, etc. The Department has garnered funds of about 1.5 crore from UGC, DST, DST-SERB, DST-FIST, DBT, Heber Au Sable Institute USA, TNSCST for undertaking major and minor projects, and for organising conferences, workshops and seminars on Material Science, Solid State Physics, Nonlinear Dynamics, Thin Films, Electronics, Renewable Energy, etc. and has received the DBT star status. Most of the members of the staff are members of academic or scientific bodies, conveners of various programmes, resource persons, reviewers of journals outside the college. Efforts are on to establish tie-ups with business houses and industries. The Department has pioneered the construction of, first of its kind, straw-bale houses, which are fireproof, earth-quakeproof, and economical. The department has initiated Physics Innovation and Incubation Center(PICIC) for assembling battery vehicles. The achievements of the faculty and students in academic and research activities like research publications (nearly 178 publications with impact factor ranging from 0.5 to 6.615, citation index ranging from 269 to 829), Best Researcher Awards, Best Paper Awards, Projects, visits abroad, editing and authoring books, nation-building and extension activities, with additional responsibilities in the College, have been acknowledged by the College Management through the Best Department Award (among Basic Sciences) for the past three years consecutively.

The Department has flexibility in framing courses, conducting UG and PG Diploma and Certificate programmes. The faculty members are very active in reaching out to students and the general public by conducting summer training programmes, demonstration lectures, and video lessons for High School and College teachers. The Department has a modern laboratory including special purpose mini-labs, hardware lab and operating systems and networking lab to serve the teaching and research needs of the faculty and students of the Department.

The increase in demands for Physics programme, year after year, clearly shows the academic reputation of the Department. The Department helps students of other related disciplines also to undertake project works, especially in electronics and non-conventional energy sources like solar energy and wind energy.