|
A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is |
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|
(a) |
10/7 |
(b) |
10/3 |
(c) |
7/5 |
(d) |
4/3 |
|
A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is |
|||||||
|
(a) |
10/7 |
(b) |
10/3 |
(c) |
7/5 |
(d) |
4/3 |