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.

Telscope is used to provide angular magnification of distant objects. Write any two advantage of reflecting type tele scope over refracting type telescopes.

A microscope is a device used to obtain magnified images of small objects. Draw a labelled ray diagram of a compound microscope forming an Image at the near point of the eye.

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

A small telescope has an objective lens of focal length 140 cm and an eyepiece of focal length 5 cm. What is the magnifying power of the telescope for viewing distant objects when the telescope is in normal adjustment.

A group of students are given a project for construct ing a telescope and they were supplied with two biconvex lens of power 1 diopter and 0.1 dioptre.Draw the ray diagram for the formation of the image by a telescope.

An object is placed 8 cm away in front of a concave mirror of focal length 5 cm. Find out the position of image and magnification. Find out whether the image is inverted or erect by drawing the ray diagram on a graph paper.

A small telescope has an objective lens of focal length 140 cm and an eyepiece of focal length 5 cm. What is the magnifying power of the telescope for viewing distant objects when the final image is formed at the least distance of distinct vision(25cm).

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