Question

How far below the surface of a lake is the image of a star? Explain.

a) The depth depends on the size of the star.
b) The image is at the lake's surface.
c) The image depth is determined by the star's distance.
d) Stars don't have images below water.

Answer 1

When an object is submerged in water, it appears to be at a depth that is more shallow than its actual depth. This is because of the refraction of light at the interface of water and air.

Step-by-step explanation:

When an object is submerged in water, it appears to be at a depth that is more shallow than its actual depth. This is because of the refraction of light at the interface of water and air.

When light travels from air to water, it bends towards the normal line, which is a line perpendicular to the interface of the two mediums. This bending of light causes the object to appear at a location that is above the actual position of the object, making it appear more shallow.

Therefore, the image of a star below the surface of a lake would also appear at a depth that is more shallow than its actual depth, due to the refraction of light.