A student measured the length of a rod and wrote it as \( 3.50 \mathrm{~cm} \). Which instrument...
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0A student measured the length of a rod and wrote it as \( 3.50 \mathrm{~cm} \). Which instrument did he use to measure it
\( \mathrm{P} \)
[JEE (Mains) 2014]
W
(a) A meter scale
(b) A vernier calliper where the 10 divisions in vernier scale matches with 9 division in main scale and main scale has 10 divisions in \( 1 \mathrm{~cm} \)
(c) A screw gauge having 100 divisions in the circular scale and pitch as \( 1 \mathrm{~mm} \)
(d) A screw gauge having 50 divisions in the circular scale and pitch as \( 1 \mathrm{~mm} \)
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