Question

When a ray of light travelling in glass enters into water obliquely
(a) it is refracted towards the normal
(b) it is not refracted at all
(c) it goes along the normal
(d) it is refracted away from the normal

Answer 1

It will bend away from normal as water is optically rarer than glass.

Hope it helped.

Answer 2

When a ray of light travelling in glass enters into water obliquely, then it is refracted away from the normal.

Explanation:

• As we know, a glass is a denser medium where as water is a rarer medium. In this case, a ray of light is entering from glass to water i.e., from a denser medium into rarer medium.
• From the Snell’s law, we found that the ray of light bends away from the normal when it travels from a denser medium to a rarer medium.
• Hence, the ray of light gets refracted away from the normal when travelling in glass enters into water obliquely.

Therefore the correct answer is Option(d) it is refracted away from the normal.