A small bulb is placed at the bottom of a tank containing water to a depth of 80 cm. What is the area of the surface of water through which light from the bulb can emerge out? Refractive index of water is 1.33. [Consider the bulb to be a point source]

A small bulb (assumed to be a point source) is placed at the bottom of a tank containing water to a depth of 80 cm . Find out the area of the surface of water through which light from the bulb can emerge. Take the value of refractive index of water to be 4//3 .

A small bulb (assumed to be a point source) is placed at the bottom of a tank containing water to a depth of 80 cm . Find out the area of the surface of water through which light from thr bulb can emerge. Take the value of refractive index of water to be 4//3 .

A small bulb is placed at the bottom of a tank containing water to a depth of 80cm. What is the area of the bulb can emerge out? Refractive index of water is 1.33. (Consider the bulb to be a point source.)

A cylindrical tank 7m in diameter, contains water to a depth of 4m. What is the total area of wetted surface

The refractive index of water is 1.33. What will be the speed of light in water

A point source of light is placed at the bottom of a water lake. If the area of the illuminated circle on the surface is equal to 3 times the square of depth of the lake, the refractive index of water.

The wavelength range of white light is 400 nm to 700 nm. What will be the wavelength range if light passes through water? Refractive index of water is 1.33.

A point source of light is 80.0cm below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water.

If the refractive index from air to glass is 1.5 ,and the refractive index of water is 1.33. What is the refractive index from glass into water?