Question

3) The image of an object formed by an optical device is always virtual and
diminished. The device may be : *
O
a concave mirror
O
a concave lens
O a convex lens
O
a glass plate​

Answer 1

Explanation:

A concave lens always produces virtual, erect and diminished images and the decrease in the size of the image depends on the position of the object.

Hence, the correct answer is concave lens...

Answer 2

Correct answer is option (b) Concave lens.

Hence, we can say that the concave lens always gives virtual and the diminished image of an object.

Explanation:

A concave lens is also known as a diverging lens because it is shaped round inwards at the centre and bulges outwards through the edges, making the light diverge. They are used to treat myopia as they make faraway objects look smaller than they are.

Refer the attachment.