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

Question

Quizplus · Accepted Answer

The coin appears to be at a depth d' given by the formula:

d' = d/n

where d is the actual depth of the coin (15 cm) and n is the refractive index of the cleaning fluid (1.13).

Substituting the values, we get:

d' = 15/1.13 = 13.27 cm

Therefore, the coin appears to be 13.3 cm beneath the surface. So, the answer is B.

A Coin Has Been Dropped Inadvertently into a Bucket Full