A simple microscope or a magnifying glass with a focal length 5 cm forms an image at the near point of the eye. Find its magnification .

A simple microscope has a magnifying power of 3.0 when the image is formed at the near point (25 cm) of a normal eye. (a) What is its focal length? (b) What will be its magnifying power if the image is formed at infinity?

In a simple microscope of focal length 5 cm final image is formed at D , then its magnification will be

A simple microscope has a focal length of 5 cm . The magnification at the least distince of distinct vision is-

A cardsheet divided into squares each of size 1 mm^(2) is being viewed at a distance of 9 cm through a magnifying glass (a conerging lens of focal length 10 cm ) held close to the eye. (a) What is the magnification produced by the lenas ? How much is the area of each square to the virtual image ? (b) What is the angular magnification (magnifying power) of the lens ? ( c) Is the magnification in (a) equal to the magnifying power in (b) ? Explain

An object is seen thorugh a simple microscope of focal length 12 cm. Find the angular mgnification produced if the image is formed at the near point of the eye which is 25 cm away from it.

An object is seen through a simple microscope of focal length 12 cm. Find the angular magnification produced if the image is formed at the near point of the eye which is 25 cm away from it.

A compound microscope consists of an objective lens with focal length 1.0 cm and eye piece of the focal length 2.0 cm and a tube 20 cm from eye lens. Now final image is formed at the near point of eye, so find the magnifying power of microscope.

The magnification produced by the objective lens of a compound microscope is 25. The focal length of eye piece is 5 cm and it forms find image at least distance of distinct vision. The magnifying power of the compound microscope is

(a) An object is seen through a simple microscope of focal length 12cm . Find the angular magnification produced if the image is formed at the near point of the eye which is 25cm away from it. (b) A 10D lens is used as a magnifier. Where should the object be placed to obtain maximum angular magnification for a normal eye (near point = 25cm) ?

The magnification power of a convex lens of focal length 10cm, when the image is formed at the near point is