Mirror in the arrangement shown in figure is moving up with speed `8 cm//sec`. There is an object `O` outside water. Speed of final image formed after two refraction and one refraction and the reflection is :
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An insect at point 'P' sees its two images in the water mirror system as shown in the figure. One image is formed due to direct partical reflection from water surface and the other image is formed due to refraction, reflection & again refraction by water mirror system in order. Find the separation (in cm) between the two images. Mirror M has focal length 60 cm [Take mu_(w)=4//3]

An insect at point 'P' sees its two images in the water mirror system as shown in the figure. One image is formed due to direct partical reflection from water surface and the other image is formed due to refraction, reflection & again refraction by water mirror system in order. Find the separation (in cm) between the two images. Mirror M has focal length 60 cm [Take mu_(w)=4//3]

All objects referred to the subsequent problems lie on the principal axis. In above question if the object is real, then the final image formed after two refractions :

All objects referred to the subsequent problems lie on the principal axis. In above question if the object is real, then the final image formed after two refractions :

In the figure shown , a point object O is placed in air on the principal axis. The radius of curvature of the spherical surfaces is 60 cm. I is the final image formed after all reflections and refractions.

In the figure shown , a point object O is placed in air on the principal axis. The radius of curvature of the spherical surfaces is 60 cm. I is the final image formed after all reflections and refractions.

Object O is placed in front of a plane mirror M. A glass slab S having thickness t = 3 cm and refractive index mu = 1.8 is placed between the object and the mirror. The refracting faces of the slab are parallel to the mirror surface. The object is made to move with a velocity of u = 2 m//s perpendicular to the mirror surface. Find the speed of the image formed after (a) refraction from the slab followed by reflection from the mirror. (b) refraction from the slab followed by reflection from the mirror followed by the refraction from the slab.