Physics, asked by deepu8436, 1 year ago

5. An object is placed at a distance of 20 cm in front of a convex lens whose radius of curvature is 40 cm. The image is formed at ..............
A) Beyond 'C'
B) Between 'C' and 'F'
C) At 'C'
D) At infinite distance​

Answers

Answered by tanis93
2

Answer:

option b is the correct answer of your question


deepu8436: give me reason
Answered by kalyanpendem007
2

Answer:

the answer is option D i.e at infinty distance

Explanation:

As Radius of curvature is 40cm.

Focal length=R/2 .so f=20cm

lens formula 1/f=1/v-1/u

                      1/20=1/v-1/20

                       1/v=0/0    i.e v=infinity

so image will form at infinity

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