In optics, the refractive index of a substance is described by the formula n = c/v, where c is:
Answer
The correct answer is C: the speed of light in vacuum. In the formula n = c/v, 'c' represents the speed of light in vacuum (~3×10⁸ m/s) and 'v' is the speed of light in the given medium.
A.the centre of curvature
B.the radius of the sphere
C.the speed of light in vacuum✓ Correct
D.the speed of light in medium
Explanation
In the formula n = c/v, 'c' represents the speed of light in vacuum (~3×10⁸ m/s) and 'v' is the speed of light in the given medium.
💡 Practice unlimited SSC CHSL PYQs + AI-tracked progress on each topic. Sign up free →
Want more SSC CHSL practice?
Free daily 10-Q quiz · adaptive mocks · 49,000+ practice questions (19,000+ verified PYQs) · AI doubt solver in Hindi + English