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
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Refraction index, n = (real depth)/apparent depth
1.5 = (10)/X
X = (10)/1.5 = 6.67 cm
Source: WAEC / JAMB / NECO Classroom Archive (Record #14328)