Physics-
General
Easy
Question
A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. 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
The correct answer is: x, r and d all increase
On heating the system; x, r, d all increases, since the expansion of isotropic solids is similar to true photographic enlargement.
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