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Q.

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

l=0.8 cm, n=10

b

l=0.5 cm, n=10

c

l=0.2 cm, n=10

d

l=0.4 cm, n=9

answer is A.

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Detailed Solution

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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