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A vernier callipers having main scale of $10 cm$ containing 100 divisions. If n be number of divisions on vernier scale of length l. Vernier calliper is designed to have a least count of $0.02 cm$ , then

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l=0.8 cm, n=10

l=0.5 cm, n=10

l=0.2 cm, n=10

l=0.4 cm, n=9

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detailed solution

Correct option is A

Least count =1 Main scale division - 1 Vernier scale division0.02=10100-ln=0.1-lnln=0.1-0.02=008If n=10, l=0.08 cm

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A vernier callipers having main scale of 10 cm containing 100 divisions. If n be number of divisions on vernier scale of length l. Vernier calliper is designed to have a least count of 0.02 cm, then

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A vernier callipers having main scale of $10 cm$ containing 100 divisions. If n be number of divisions on vernier scale of length l. Vernier calliper is designed to have a least count of $0.02 cm$ , then