In an experiment, the refractive index of water was found to be 1.35, 1.29, 1.32 and 1.36. What is the average refractive index of water?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 1.33
Refractive indices: 1.35, 1.29, 1.32, 1.36
Average = (1.35 + 1.29 + 1.32 + 1.36) ÷ 4
= 5.32 ÷ 4
= 1.33