A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?

Explanation

To determine whether a ray of light bends towards or away from the normal when it enters water from air, we can follow these steps:

### Step 1: Identify the mediums involved
- The ray of light is traveling from air (a rarer medium) into water (a denser medium).

### Step 2: Understand the concept of refraction
- Refraction is the bending of light as it passes from one medium to another due to a change in its speed.

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