Question

Name the device (type of lens / mirror) used in the following cases and draw ray diagrams to
show the image formation in each case –
a) Object is placed between the device and its focus, the enlarged image is formed behind it
b) The object is placed between infinity and the device, the image is formed behind the device
between its pole and focus.

Answer 1

I a) microscopic used to ocus and enlarged to an image

Answer 2

The name of the optical devices are:

A)Object is placed between the device and its focus, the enlarged image is formed behind it

Ans:- Microscope,both concave and convex lenses.

On the other hand;

B) The object is placed between infinity and the device, the image is formed behind the device

between its pole and focus.

Ans:- Telescope,both concave and convex lenses.