Raman 's father initially taught in a school in Thiruvanaikaval , became a lecturer of mathematics and physics in Mrs. A.V. Narasimha Rao College , Vishakapatnam ( then Vizagapatnam ) in the Indian state of Andhra Pradesh , and later joined Presidency College in Madras ( now Chennai ) .
Raman 's father initially taught in a local school in Thiruvanaikaval and later became a lecturer of mathematics and physics in Mrs. A.V. Narasimha Rao College , Vishakapatnam ( then Vizagapatnam ) in the Indian state of Andhra Pradesh , and later joined Presidency College in Madras .