A thin cylindrical metal rod is bent int...

A thin cylindrical metal rod is bent into a ring with a small gap as shown in figure. On heating the system

x decreases, r and d increase

x and r increase, d decreases

x, r and d all increase

Data insufficient to arrive at a conclusion

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The correct Answer is:

On heating the system, x, r, d all increases, since the expansion of isotropic solids is similar in all directions

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