Question

17. Which of the following is/are optical device(s) that uses a lens to form a real image of an object?
(1) magnifying glass
(2) pinhole camera
(3) slide projector
a. (3). only
b. (1) and (2) only
c. (1).and (3) only
d. (2) and (3) only​

Answer 1

Answer:

Option C (1) and (3).are optical devices that uses lens.