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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 `3.50cm`. Which insturment did he use to measure it?

A

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

B

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

C

A metre scale

D

A vernier callipers where the `10` divisions in vernier scale matches with `9` divisions in main scale and main scale has `10` divisions in `1cm`.

Text Solution

Verified by Experts

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