– There are …….points in all called cardinal points of an optical system with the help of which, the position and size of the image of a given object can be found.
A. 4
B. 8
C. 3
D. 6
Answer:D
– There are …….points in all called cardinal points of an optical system with the help of which, the position and size of the image of a given object can be found.
A. 4 B. 8 C. 3 D. 6