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1.
A monochromatic beam of light passes from a denser medium into a rarer medium. As a result
2.
In an astronomical telescope in normal adjustment, a straight black line of length 
is drawn on the objective lens. The eyepiece forms a real image of this line. The length of this image is 
. The magnification of the telescope is
is drawn on the objective lens. The eyepiece forms a real image of this line. The length of this image is . The magnification of the telescope is
3.
Which one of the following is not associated with total internal reflection
4.
As the position of an object (
) reflected from a concave mirror is varied, the position of the image 
also varies. By letting the changes from 0 to 
the graph between 
versus will be
) reflected from a concave mirror is varied, the position of the image also varies. By letting the changes from 0 to the graph between versus will be
5.
A triangular prism of glass is shown in the figure. A ray incident normally to one face is totally reflected, if 
. The index of refraction of glass is
. The index of refraction of glass is