JAMB Physics 2015 Objective — Question 16
Question 16 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2015 Objective paper, with the correct answer and a full explanation.
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If the speed of light in water is 2.26×10⁸ms⁻¹ and the velocity of light in air is 3.0×10⁸ms⁻¹. Calculate the refractive index of water.
- A. 1.33Correct
- B. 1.23C
- C. 1.45
- D. 1.56
Explanation
n = speed in air / speed in water = 3.0×10⁸/2.26×10⁸ = 1.33.
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