Where should object be placed in front of a convex lens to get real image of the size of object?
A. At principal focus of lens
B. At twice the focal length
C. At infinity
D. Between optical centre of lens and its principal focus. –
Answer:B
Where should object be placed in front of a convex lens to get real image of the size of object?
A. At principal focus of lens B. At twice the focal length C. At infinity D. Between optical centre of lens and its principal focus. –