A student measures the thickness of a copper wire using standard instruments and reports it as 0.1 cm, 0.15 cm and 0.157 cm. The instruments used to find these measurements are _, and ___ respectively.

vernier calipers, ordinary scale, screw gauge

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ordinary scale,vernier calipers, screw gauge

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screw gauge, vernier calipers, ordinary scale,

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ordinary scale, screw gauge, vernier calipers

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Solution

The correct option is B ordinary scale,vernier calipers, screw gauge
Least count of the ordinary scale is 0.1 cm, that of vernier scale is 0.01 cm and that of screw gauge is 0.001 cm. This means ordinary scale, vernier callipers and screw gauge can give measurements up to 0.1 cm, 0.01 cm and 0.001 cm respectively. Thus 0.1 cm is taken with the help of ordinary scale, 0.15 cm is taken with the help of vernier callipers and 0.157 cm is taken using screw gauge.

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A student measures the thickness of a copper wire using standard instruments and reports it as 0.1 cm, 0.15 cm and 0.157 cm. The instruments used to find these measurements are _____, ______ and _____ respectively.

A student measures the thickness of a copper wire using standard instruments and reports it as 0.1 cm, 0.15 cm and 0.157 cm. The instruments used to find these measurements are _, and ___ respectively.