The given figure shows image formation by a lens. Analyse the figure and answer the following questions :…
The given figure shows image formation by a lens. Analyse the figure and answer the following questions :
(a) What is the type of lens used for image formation in the given ray diagram ?
(b) If the real image is formed at a distance of 30 cm from the lens and the size of image is twice the size of the object, then where was the object placed ?
Solution
1
(a) Convex lens / Converging lens
(b) m = - 2, v= 30 cm
ν
m =u
ν
u=m
u = −2
u = -15cm / The object was placed at 15 cm in front of the lens.
