Question

(a) Which optical instrument shows arrangement of lenses as shown in the
figure?
(b) Write in brief the working of this optical instrument.
(c) How can we get different magnifications in this optical instrument?
(d) Draw the figure again and label it properly.​

Answer 1

Answer:

(a)Refracting telescope.

(b)Two convex lenses are used to get the image of object at a far distance.

(c)By adjusting the distance between two lenses we can get different magnifications.

(d)fe=fu

fo=fe