focal length of a concave lens is 10cm, its radius of curvature will be (a) 40cm (b) 30cm (c) 20cm (d) 10cm
Answers
Answered by
2
Answer:
c is the correct answer for your question
Answered by
1
Answer:
C) 20cm
Explanation:
Here Is Your Answer My Friend !!!
As we know R = 2f
f = 10cm
R = 2 × 10
R = 20cm
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