Question

A convex lens:
(A) Is thicker at the edges than at the handle
(B) Is thicker at the middle than at the handle
(C) Diverges rays of light
(D) Is of uniform thickness everywhere

Answer 1

Hint :A lens can be defined as the piece of the glass or the other transparent material which are curved at the sides for concentrating or dispersing the light rays. Here we will see the types of lens and will check for the features of the convex lens.

Complete Step By Step Answer:
There are broadly two types of lenses.
-A convex lens
-A concave lens
A convex lens can be defined as the lens which are thicker at the center and thinner at the edges whereas the concave lens can be defined as the lens which are thicker at the edges and thinner at the center.
Convex lens is the converging lens whereas the concave lens is the diverging lens.
Since, the convex lenses are the converging lens and therefore it should be thicker at the middle than the ends.
From the given multiple choices, the option B is the correct answer.

Additional Information:
A compound microscope is the microscope which uses a lens close to the object being viewed so that to collect light known as the objective lens which focuses a real image of the object inside the microscope. The image then is magnified by the second lens or the group of lenses known as the eyepiece which gives the viewer the magnified and an enlarged inverted virtual image of the object and therefore, we do not get a real image.

Note :
Always remember the difference between the concave and concave lenses. Also, remember the type of the image and the size of the image produced by placing the object at different distances. A concave lens is thicker at the edges than at the handle.