Physics - Error Question with Solution | TestHub

PhysicsErrorMiscellaneousEasy2 minPYQ_2020

PhysicsEasynumerical

In a screw gauge, $5$ complete rotations of the screw cause it to move a linear distance of $0.25 cm$ . There are $100$ circular scale divisions. The thickness of a wire measured by this screw gauge gives a reading of $4$ main scale divisions and $30$ circular scale divisions. Assuming negligible zero error, what is the thickness (in mm) of the wire?

Answer:

21.50

Solution:

Least count $= \frac{0 .25}{5 \times 100} cm = 5 \times 10^{- 4} cm$

Reading $= 4 \times 0 .05 cm + 30 \times 5 \times 10^{- 4} cm$

$= (0 .2 + 0 .0150) cm = 2.15 mm$

Stream:NTA_ABHYASSubject:PhysicsTopic:ErrorSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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