India, Aug. 21 -- For a generation of Indian students preparing for competitive exams, "Hello bacchon." became more than a classroom greeting. It became a recognisable greeting from Alakh Pandey's PhysicsWallah lessons on YouTube.

Pandey began tutoring students by uploading videos on YouTube for free.

What began with no-charge JEE and NEET lectures has now grown into a multi-channel education business spanning paid online courses, hybrid learning, offline coaching centres and a widening portfolio of education offerings.

PhysicsWallah, a mere name on YouTube not five years ago, became India's first new-age edtech startup to hit the public market last year and is now generating quarterly revenue of more than Rs.1,000 Cr.

After its maide...