Question

a man is standing near a water body observes a rock immersed inside the water can he see the rock in its actual position explain with the help of a diagram

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Answer 1

APPARENT DEPTH OF AN OBJECT MOVED IN THE GIVEN MEDIUM - EXAMPLE

Example: A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?

Solution:

h  

1

​  

=12.5cm; h  

2

​  

=9.4cm, μ=  

h  

2

​  

 

h  

1

​  

 

​  

=1.33

Now, water is replaced by μ  

1

​  

=1.63

So, μ  

1

​  

=  

y

h

​  

 

⇒ y=7.67 cm

∴ distance by which the microscope should be moved up is 9.4−7.67=1.73 cm

Answer 2

Answer:

your answer is in attachment