Test Index

JAMB Physics 2024 Paper

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Question : 65

Total: 125

Calculate the depth of a swimming pool if the apparent depth is 10cm. ( Refractive index of water = 1.33 )

7.5cm
10.0cm
13.3cm
6.87cm

Solution:

Concept:

The refractive index relates real depth to apparent depth when viewing an object in water.

Explanation:

The formula is:

\text{Refractive index} = \frac{\text{real depth}}{\text{apparent depth}}

Rearrange to find real depth:

\text{Real depth} = \text{Refractive index} \times \text{apparent depth}

Given apparent depth

= 10 \, \text{cm}

and refractive index

= 1.33

:

\text{Real depth} = 1.33 \times 10 = 13.3 \, \text{cm}

Answer:

13.3 \, \text{cm}

(Option C)

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