Draw the ray diagram of image formation when an object is placed at the 2F of a convex lens.

Combination of lenses are used in optical instruments to obtain the required power. Draw a neat schematic ray diagram for the foma tion of image due to a point object placed in front of two thin convex lenses placed in contact

With the help of a ray diagram sketch the image formation of a convex lens when the object is between 2F and F.

Draw the ray diagram showing the formation of image by a compound microscope.

Telscope is used to provide angular magnification of distant objects. Draw the ray diagram of a refracting type telescope when it is in normal adjustment.