An object is embedded in a block of ice, 10 cm below the plane surface....

JAMB 2010

An object is embedded in a block of ice, 10 cm below the plane surface. if the refractive index of the ice is 1.50, the apparent depth below the surface is?

A. 2.50 cm
B. 6.67 cm
C. 7.50 cm
D. 7.63 cm

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Correct Answer: Option B

Explanation

Refraction index, n = (real depth)/apparent depth
1.5 = (10)/X
X = (10)/1.5 = 6.67 cm

There is an explanation video available below.

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An object is embedded in a block of ice, 10 cm below the plane surface....

Correct Answer: Option B

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