Question

what type of lens is used as a 'magnifying glass'? How is the object positioned with respect to the lens?draw the appropriate ray digram

Answer 1

Generally we use convex lens as a magnifier because it produces a magnified image of whatever object we want to see but, remember it depends on the distance between the eye and the object viewed with ease.

convex lens is also called as a converging lens. For best results try adjusting the magnifier close to one eye and moving the eye and lens of the magnifier simultaneously, this helps in obtaining higher magnification. And this point is assumed as the near point where you see  the image clearly.

So why do we prefer a convex lens? because it merges parallel beams of light rays into one strong beam of light. The object is adjusted approximately at 25cm or more or less but near to that value, since it is considered as a standard value for magnifier.

Answer 2

Answer:

Generally we use convex lens as a magnifier because it produces a magnified image of whatever object we want to see but, remember it depends on the distance between the eye and the object viewed with ease.

convex lens is also called as a converging lens. For best results try adjusting the magnifier close to one eye and moving the eye and lens of the magnifier simultaneously, this helps in obtaining higher magnification. And this point is assumed as the near point where you see  the image clearly.

So why do we prefer a convex lens? because it merges parallel beams of light rays into one strong beam of light. The object is adjusted approximately at 25cm or more or less but near to that value, since it is considered as a standard value for magnifier.

Explanation: