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- Can someone explain A student measured the diameter of a wire using a screw gauge with least count 0.001 cm and listed the measurements. The correct measurement is
- #Birla Institute of Technology & Science Admission Test
- #Physics
- #Units and Measurement
- #Engineering
A student measured the diameter of a wire using a screw gauge with least count 0.001 cm and listed the measurements. The correct measurement is
- Option 1)
5.3 cm
- Option 2)
5.32 cm
- Option 3)
5.320 cm
- Option 4)
5.3200 cm
Answers (1)
As we learnt in
Significant figures -
The figures of a number that express a magnitude to a specified degree of accuracy
-
The least count of screwgauge is smallest length which can be measured accuretly with it. At least count 0.001 cm
Hence measured value should be recorded up to 3 decimal i.e 5.320 cm
Option 1)
5.3 cm
Option is incorrect
Option 2)
5.32 cm
Option is incorrect
Option 3)
5.320 cm
Option is correct
Option 4)
5.3200 cm
Option is incorrect
View full answer
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