The main scale reading while measuring the diameter of a ring using vernier caliper is 3cm, the vernier coincidence is 7 and the negative zero error is 0.03,what will be the radius of the ring?
A
1.82 cm
B
1.15 cm
C
1.9 cm
D
1.55 cm
Answers
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1
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10
Answer:
5.124 cm
Main scale can measure 5.10 and 5.15
∴ Main scale division (s) =0.05cm
Also, vernier scale division (v) =
50
2.45
=
100
4.9
=0.049cm/div
Thus, least count =0.05−0.049=0.001cm
Diameter =5.10+24×0.001
=5.124cm
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