Question

fii) Name two optical instruments where such an image is obtained.
611) List three characteristics of the image formed if this lens is replaced
by a concave mirror of focal length 1 and an object is placed at a
distance 'f/2 in front of the mirror.​

Answer 1

Answer:

Three optical instruments are cameras, microscopes and telescopes. Cameras are optical devices which focus light on a piece of film to record and allow user to record an image of an object, either on photo paper or digitally.

Answer 2

Answer:

Canara microscope telescope

Explanation:

camara microscope telescope are the 3 instruments