Question

When a small lamp is held 1.5 m above the surface of water in a tank, its image formed by reflection at the surface appears to coincide with the image of the bottom of the tank. (μ of water = 4/3) .​

Answer 1

Answer:

So the level of water in the tank is 2.0 m

Explanation:

As we know that lamp is at position of 1.5 m from the surface of the water

So the image will form at same distance inside the surface

So image position with respect to water surface is

$d = 1.5 m$

now we can say that position of bottom of the tank will appear some height above it

so its position is given as

$h_i = \frac{h_o}{\mu}$

$1.5 = \frac{h_o}{4/3}$

so we have

$h_o = 2 m$

#Learn

Topic : Refraction of light

https://brainly.in/question/8592498