Question

14. the ratio of velocity of light
in air to the velocity of light in a
given transparent medium is
called
O refractive index
O focal length
O radius of curvature
O critical angle​

Answer 1

Answer:

$refraction \: index$

Explanation:

Refraction index (n) of a medium is defined as the ratio of the speed of light in vacuum to the speed of light in that medium. We may write: c = 3. 00x108 m/s is the speed of light in vacuum, and and v is speed of light in the medium of refraction index n.