Light travels with a velocity 1.5 x 108 m/s in a medium. On entering the second medium its velocity becomes 0.75 x 108 m/s. What is the refractive index of the second medium with respect to the first medium?

At AI Shiksha, we are driven by a singular mission – to democratize access to artificial intelligence education. We believe that AI is a transformative force that has the power to shape the future, and we are committed to making this cutting-edge technology accessible to everyone.