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A student measured the diameter of a wir...

A student measured the diameter of a wire using a screw gauge with least count `0.001cm` and listed the measurement. The correct measurement is

A

(A)5.3 cm

B

(B)5.32 cm

C

(C)5.320 cm

D

(D)5.3200 cm

Text Solution

Verified by Experts

The correct Answer is:
`sqrt((2KQ^(2))/(mR))`
COME : `K_(f)+U_(i)=K_(f)+U_(f)`

`0+0=1/2 mV^(2)-(KQ^(2))/(R)`
`V=sqrt((2KQ^(2))/(mR))`
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