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

  1. x decreases, r and d increase    
  2. x and r increase, d decreases    
  3. x, r and d all increase    
  4. 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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