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A uniform metallic object of circular sh...

A uniform metallic object of circular shape which is free to expand in every direction is shown in figure. The parameter which will not increase on hearing the object is:

A

x(gap)

B

r(radius of circle)

C

`theta`(angle formed at centre)

D

t(thickness)

Text Solution

Verified by Experts

The correct Answer is:
C
`theta=x/r rArr theta'=(x+Deltax)/(R+DeltaR)=(x(1+alphaDeltaT))/(R(1+alphaDeltaT))=x/R`
So, `theta` will remains constant rest all will increases.
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