A glass slab of thickness 12 cm is placed on a table. The level surface of the slab has a black spot. At what depth from the upper surface will the spot appear when viewed from above?
(Refractive index of glass = 1.5)

A glass slab of thickness 12 mm is placed on a table .The lower surface of the slab has a black spot.At what depth from the upper surface will th espot appear,when viewed fromo above?The refractive index of glass =1.5.

A glass slab (n - 1.5) of thickness 3.0 cm is placed on an ink spot. A person looks at it from a distance 5.0 cm above the ink spot. The distance of the spot will appear to be :

The opposite faces of a glass slab of thickness 15 cm are parallel. If a ray of light is incident on the glass slab at an angle 60^(@) , calculate the lateral displacement of the ray when it emerges from the slab. [mu " "" of glass" = 1.5]

A glass slab of thickness 4 cm contains the same number of waves as 5 cm of water,when both are traversed by the same monochromatic light.If the refractive index of water is 4//3 ,what is the refractive index of glass?

A microscope is focussed on an ink mark on the top of a table. If we place a glass slab of 3 cm thick on it, how should the microscope be moved to focus the ink spot again? The refractive index of glass is 1.5