A point source of light is placed at distance h below the surface of a large and deep lake. What fraction of light will escape through the surface of water?

A point source of light is placed at a distance h below the surface of a large and deep lake. Show that the fraction f of light that escape directly from water surface is independent of h and is given by f=[[1-sqrt(1-1//mu^2)])/2

A point source of light is placed at a distance h below the surface of a large and deep lake. Show that the fraction f of light that escape directly from water surface is independent of h and is given by f=[[1-sqrt(1-1//mu^2)])/2

A point source of light is placed at a distance h below the surface of a large and deep lake. If f is the fraction of light energy that escapes directly from water surface and mu is refractive index of water then:

A point source of light is placed at a distance h below the surface of a large deep lake. (a) Show that the fraction f of the light energy that escapes directly from the water surface is independent of h and is given by f=(1)/(2)-(1)/(2n)sqrt(n^(2)-1) where n is the index of refraction of water. (Note: Absorption within the water and reflection at the surface, except where it is total, have been neglected) (b) Evaluate this ratio for n=4//3 .

A point source of light is placed at a distance h below the surface of a large deep lake. (a) Show that the fraction f of the light energy that escapes directly from the water surface is independent of h and is given by f=(1)/(2)-(1)/(2n)sqrt(n^(2)-1) where n is the index of refraction of water. (Note: Absorption within the water and reflection at the surface, except where it is total, have been neglected) (b) Evaluate this ratio for n=4//3 .

A point source of light is placed at a distance h below the surface of a large deep lake.What is the percentage of light energy that escapes directly form the water surface if mu of the water= 4//3 ?(neglet partial reflection)

A point source of light is placed at a distance h below the surface of a large deep late.What is the percentage of light energy that escapes directly form the water surface is mu of the water= 4//3 ?(neglet partial reflection)

A point source of light is placed at a depth of h below the surface of water of refractive index mu . A floating opaque disc is placed on the surface of water so that light from the source is not visible from the surface. The minimum diameter of the disc is

A point source of light is placed at a depth of h below the surface of water of refractive index mu . A floating opaque disc is placed on the surface of water so that light from the source is not visible from the surface. The minimum diameter of the disc is