SaraNextGen.Com

The plane faces of two identical plano-convex lenses each having a focal length of 50 cm are placed against each other to form a usual biconvex lens. The distance from this lens combination at which an object must be placed to obtain a real, inverted image which has the same size as the object is

a)

50 cm

b)

25 cm

c)

100 cm

d)

40 cm



Question ID - 152208 | SaraNextGen Top Answer

The plane faces of two identical plano-convex lenses each having a focal length of 50 cm are placed against each other to form a usual biconvex lens. The distance from this lens combination at which an object must be placed to obtain a real, inverted image which has the same size as the object is

a)

50 cm

b)

25 cm

c)

100 cm

d)

40 cm

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

The focal length of combination is

Given,

Object when placed at center of curvature forms a real, inverted image of same size as object = (2)

127 votes


127