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Physics · 2014
JEE Main 2014 · 2014-04-06 Offline · Q30
A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?
A student measured the length of a rod and wrote it as $\displaystyle 3.50$ cm . Which instrument did he use to measure it ?
Official answer
(2)
A vernier calliper where the $\displaystyle 10$ divisions in vernier scale matches with $\displaystyle 9$ division in main scale and main scale has $\displaystyle 10$ divisions in $\displaystyle 1$ cm.
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