Real Depth And Apparent Depth - Practice Questions & MCQ

A hemispherical glass body of radius 10 cm and refractive index 1.5 is silvered on its curved surface.  A small air bubble is 6 cm below the flat surface inside it along the axis.  The position of the image of the air bubble made by the mirror is seen :

A microscope is focused on an object at the bottom of a bucket. If liquid with a refractive index is poured inside the bucket, then the microscope has to be raised by  to focus the object again. The height of the liquid in the bucket is :

A bulb is placed at a depth of in water and a floating opaque disc is placed over the bulb so that the bulb is not visible from the surface. What is the minimum diameter of the disc?

. A metal plate is lying at the bottom of a tank full of a transparent liquid. Height of tank is but the plate appears to be at above bottom. The refractive index of liquid is:

In a lake, a fish rising vertically to the surface of water uniformly at the rate of , observes a bird diving vertically towards the water at the rate of . The actual velocity of the dive of the bird is (given, refractive index of water )

The apparent depth of water in the cylindrical water tank of diameter cm is reducing at the rate of   when water is being drained out at a constant rate. The amount of water drained in is ( refractive index of air, refractive index of water)