6.1 Refraction of Light

6.1 Refraction of Light - Set 2

Report 1 / 5

Below shows, the equation to find the refracted index of a material.

\(n = \dfrac{x}{y}\)

What is x and y?

	X	Y
(A)	Speed of light in a material	Speed of light in vacuum
(B)	The wavelength in the material	The wavelength in vacuum
(C)	Speed of light in vacuum	Speen of light in a material
(D)	The wavelength in vacuum	The wavelength in the material

Difficulty Level: Medium

6.1 Refraction of Light - Set 2

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Below shows a speed of light in the glass and alcohol.

Speed of light in alcohol : \(2.206\times 10^8\ {ms}^{-1}\)

Speed of light in glass : \(1.765\times 10^8\ {ms}^{-1}\)

Which one have the smallest index of refraction?

Alcohol
Glass

Difficulty Level: Medium

6.1 Refraction of Light - Set 2

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What is actually the index of refraction tell us?

The ability of the light to penetrate
The density of the medium
Speed of the light in a medium
Nothing

Difficulty Level: Medium

6.1 Refraction of Light - Set 2

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\(n = {{c} \over v}\)

C - The speed of light in vacuum.

v - The speed of light in medium.

n - Refractive index.

If the value of v increases, what happens to the degree of refraction?

Increases
Decreases
No changes

Difficulty Level: Medium

6.1 Refraction of Light - Set 2

Report 5 / 5

An experiment was carried out to investigate the relationship between angle of incidence and the angle of refraction. Diagram below shows the data obtained.

Image result for graph of sin i against sin r

Based on the data, what can be concluded?

The ratio of sin i and sin r is constant
Refractive index cannot be determined from the graph
Angle of incidence of 90° gives the highest ratio
Area under the graph indicates the distance travelled by light

Difficulty Level: Hard