Question 1:
difficult
Match the corresponding entries of column-1 with coloumn-2 (Where m is the magnification produced by the mirror) :
Question 2:
difficult
How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container
(given that \[_{\alpha}\mu_{\omega} =4/3\])
Question 3:
difficult
Immiscible transparent liquids A,B,C,D and E are placed in a rectangular container of glass with the liquids making layers according to their densities. The refractive index of the liquids are shown in the adjoining diagram. The container is illuminated from the side and a small piece of glass having refractive index 1.61 is gently dropped into the liquid layer. The glass piece as it descends downwards will not be visible in
Question 4:
difficult
A fish rising vertically up towards the surface of water with speed 3 ms–1 and a bird diving vertically down towards it with speed 9 ms–¹. The velocity of bird with respect to fish and velocity of fish with respect to bird will be :
Question 5:
difficult
A small fish 0.4m below the surface of a lake , is viewed through a simple converging lens of focal length 3m. The lens is kept at 0.2 m above the water surface such that fish lies on the optical axis of the lens. The image of the fish seen by observer will be at \[v\]
