The back wall of a home aquarium is a mirror that is a distance of 57.1 cm away

Question

The back wall of a home aquarium is a mirror that is a distance of 57.1 cm away from the front wall. The walls of the tank are negligibly thin. A fish, swimming midway between the front and back walls, is being viewed by a person looking through the front wall. The index of refraction of air is nair = 1.000 and that of water is nwater = 1.333.

a) Calculate the apparent distance between the fish and the front wall.

(b) Calculate the apparent distance between the image of the fish and the front wall.

Explanation / Answer

(a)
Apparent depth :
= Real depth / n_water
= 28.55 / 1.33
= 21.5 cm

(b)
Image from the mirror :
= 85.65 / 1.33
= 64.4 cm

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.