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7.A student measured the length of a rod and wroteit as 3.50 cm. Which instrument did he use tomeasure it?(1) A meter scale with least count 0.1 cm(2) A vernier calliper where the 10 divisions in vemierscale matches with 9 divisions in main scale andmain scale has 10 divisions in 1 cm(3) A screw gauge having 100 divisions in thecircular scale and pitch as 1 mm(4) A screw gauge having 50 divisions in thecircular scale and pitch as 1 mmuchod off to |
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Answer» Option number 2 is correct answer |
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