Multiple choice

When a ray of light travels from an optically rarer medium (air) to an optically denser medium (glass), it bends

  1. towards the normal

  2. away from the normal

  3. returns on its own path

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When light enters a denser medium from a rarer medium, its speed decreases, causing the light ray to bend towards the normal line.

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