Question

19(i). To make an image real, inverted and larger than the object with a convex lens, the
object should be placed:
(a) At infinity
(b) On the distance 2 f of lens
(c) Between f and 2 f of lens
(d) Between 2f and infinity​

Answer 1

Between f and 2f of lens .

• 'f' means focus and '2f' means centre of curvature.

• So, an object is kept in between the focus and centre of curvature of a convex lens, an image is formed beyond the centre of curvature (i.e. > 2f).

• The image characteristics : Image is real, inverted and magnified. So its size is higher than that of object.

• See the ray diagram.

$\star$ Hope It Helps.

Answer 2

Between f and 2f of lens .

• 'f' means focus and '2f' means centre of curvature.
• So, an object is kept in between the focus and centre of curvature of a convex lens, an image is formed beyond the centre of curvature (i.e. > 2f).
• The image characteristics : Image is real, inverted and magnified. So its size is higher than that of object.

See the ray diagram.