Multiple choice

The apparent depth of a liquid in a vessel is 15 cm. If the real depth is 20 cm, the refractive index of the liquid is ___________.

  1. .56

  2. 1.33

  3. 34

  4. 4.3

  5. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The refractive index is calculated as the ratio of real depth to apparent depth. Here, 20 cm / 15 cm = 4/3, which is approximately 1.33.

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