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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 screw gauge having `100` divisions in the circular scalar and pitch as 1 mm.

B

A screw gauge having `50` divisions in the circular scalar and pitch as 1 mm.

C

A meter scale.

D

A vernier calliper where the 10 divisons in vernier scale matches with 9 division in main scale and main scale has 10 division in 1 cm.

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