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A student measured the length of a rod a...

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A

A meter scale

B

A vernier calliper where 10 divisions in vernier scale matches with 9 divisions in main scale has 10 divisions in 1 cm (i.e. 1 smallest main scale division is 0.1 cm)

C

A screw gauge having 100 divisions in the circular scale and pitch as 1mm

D

A screw gauge having 50 divisions in the circular scale and pitch as 1 cm

Text Solution

Verified by Experts

The correct Answer is:
B
Least count of vernier calliper is
`(1)/(10)` mm =0.1 mm = 0.01 cm
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