A coin has been dropped inadvertently into a bucket full of cleaning fluid (n=1.13).The bottom of the bucket is 15cm beneath the top - how far beneath the surface does the washer therefore APPEAR to be?
A) 17.0cm
B) 13.3cm
C) More information is needed
D) 7.5cm

Question

Quizplus · Accepted Answer

Using the formula for apparent depth:
apparent depth = real depth / refractive index
apparent depth = 15 cm / 1.13
apparent depth = 13.3 cm (rounded to one decimal place)
Therefore, the coin appears to be 13.3 cm beneath the surface of the cleaning fluid. The answer is B.

A Coin Has Been Dropped Inadvertently into a Bucket Full