Welcome to the Quiz!

This quiz contains 8 questions from a mix of 1 subtopics.

Will the refractive index of glass be higher or lower than 1?

Higher 

Lower

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Ice has a refractive index of 1.3, while sapphire has a refractive index of 1.8. 


Which medium will light travel fastest through, ice or sapphire?

Ice

Sapphire

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The formula for the refractive index is:

n=v×c
n=cv​
n=c×v
n=vc​

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The refractive index of water is 1.33. The speed of light in a vacuum is 3.00 x 108m/s.

What is the speed of light in water?

3.14 x 108 m/s

2.58 x 108 m/s

1.56 x 108 m/s

2.26 x 108 m/s

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The speed of light in Perspex is 1.99 x 108 m/s, while the speed of light in a vacuum is 3.00 x 108 m/s.


What is the refractive index of Perspex? Give your answer to 2 d.p.

1.51

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A ray of light enters a beaker of acetone with an angle of incidence of 35°. The ray is refracted with an angle of refraction of 25°.


What is the refractive index of acetone? Give your answer to 2 d.p.

1.36

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A ray of light enters a pane of glass with an angle of incidence of 40°. The refractive index of the glass is 1.5. 


What will the angle of refraction be? Give your answer to the nearest degree.

25

°

°

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Snell's Law is:

n=sinrsini​
n=sinisinr​
n=sinr×sini

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