Apoint source of light is 1.24 m below the surface of a pool. what is the diameter of the circle of light that a person above the water will see? assume the water has an index of refraction of =1.33.

D = 2.828 m

Explanation:

given,

distance of source of light = 1.24 m below surface of pool

refractive index of the water  = n₁ = 1.33

refractive index of air = n₂ = 1

refraction angle be = 90°

let C be the critical angle

Radius = d tan C

d is the depth of the source

Using Snell's law

n₁ sin C = n₂ sin R

1.33 x sin C = 1 x  sin 90°

C = 48.75°

hence,

R = 1.24 x tan 48.75°

R = 1.414 m

Diameter = 2 x R

D = 2 x 1.414

D = 2.828 m

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.

d) physical means can be used to separate the components of air.