Explain the refraction of light through a glass slab with a neat ray diagram `(AS_(5))`

Give an example of 'Natural Spectrum'. Explain the formation of a rainbow in sky with a neat labelled diagram.

What is refraction of light ? Explain laws of refraction.

Explain lateral shift for the refraction from rectangular glass slab.

Explain refractive index for light of different colours.

A transparent thin film of uniform thickness and refractive index n_(1) =1.4 is coated on the convex spherical surface of radius R at one end of a long solid glass cylinder of refractive index n_(2) =1.5 , as shown in the figure. Rays of light parallel to the axis of the cylinder traversing through the film from air to glass get focused at distance f_(1) from the film, while rays of light traversing from glass to air get focused at distance f_(2) from the film, Then

Draw the diagram of a mercury barometer. (AS_(5))

The refractive index of glass is maximum for…………. light.

Find the lateral shift of a light ray while it passws through a parallel glass slab of thickness 10 cm places in air. The angle of incidence in air is 60^(@) and the angle of refraction in glass is 45^(@) .

A 20cm thick glass slab of refractive index 1.5 is kept in front of a plane mirror. Find the position of the image (relative to mirror) as seen by an observer through the glass slab when a point object is kept in air at a distance of 40 cm from the mirror.

A small ink dot on a paper is viewed through a glass slab of thickness 10cm and refractive index 1.5. By what distance would the dot appear to be raised?