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The external and internal diameters of a...

The external and internal diameters of a hollow cylinder are measured to be `(4.23+-0.01)` cm and `(3.89+-0.01)`cm. The thickness of the wall of the cylinder is

A

`(0.34+-0.02)cm`

B

`(0.17+-0.02)cm`

C

`(0.17+-0.01)cm`

D

`(0.34+-0.01)cm`

Text Solution

Verified by Experts

The correct Answer is:
C
`(R_(1)+-DeltaR_(1))=(2.115+-0.005)cm`
`(R_(2)+-DeltaR_(2))=(1.945+-0.005)cm`
Thicknes `t=R_(1)-R_(2)=0.17cm`
`Deltat=DeltaR_(1)+DeltaR_(2)=0.01cm`
`(t+Deltat)=(0.17+-0.01)cm`
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