Question

10. An object 5 cm in length is held 25 cm away from a converging lens of focal length
10 cm. Draw the ray diagram and find the position, size and the nature of the
image formed.

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Answer 1

converging or convex lens

ho=5cm

u=25cm

f=10cm

1/f=1/v-1/u

1/10-1/25=1/v

7/50=1/v

1/7.14=1/v

v=7.14cm

hi->

v/u=ho/hi

7.14/25=5/hi

7.14/125=hi

17.50=hi

nature: enlarged ,real and inverted