Question

The speed of light in vegetable oil is 2.04 x 10'8 m/s. What is the index of refraction of vegetable oil?

Answer 1

Answer:

1.47

Explanation:

Refractive index = c / v

= (3 × 10⁸) / (2.04 × 10⁸)

=~ 1.47

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Answer 2

Given:

• Speed of light in oil = 2.04 × 10⁸ m/s

To find:

• Refractive index of vegetable oil?

Calculation:

• Refractive index of any substance is defined as the ratio of velocity of light in vacuum and the velocity of light in that substance.

$\mu = \dfrac{ v_{vacuum} }{ v_{oil}}$

• Velocity of light in vacuum = 3 × 10⁸ m/s.

$\implies \mu = \dfrac{ 3 \times {10}^{8} }{ 2.04 \times {10}^{8} }$

$\implies \mu = 1.47$

So, refractive index of vegetable oil is 1.47.

• Please note that : refractive index of any substance does not have any unit because it is a ratio of similar terms.