Question

Draw a figure showing the path of ray of light at an angle entering from air to water
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Answer 1

Explanation:

(i)When ray of light enters from air into water, it bends towards the normal as shown:

Ref. image 1

(ii) When ray of light enters from water into air, it bends away from the normal as shown

Answer 2

The path of the refractive ray will be changed as it goes from air to water.

Refraction

• The water and air medium from an interface of differing refractive indices thus enabling the bending of light as it moves through them.
• Thus bending of a ray of light as it traverses mediums with varying optical density is called refraction.
• Let's take a look at the diagram. Here, a ray of light moves from air to water.
• Since air has a lower refractive index than water(μair<μwater), the ray of light will bend towards the normal near the angle of incidence.
• Thus, the path of the refractive ray will be changed.

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