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Questions  

A cylindrical metal rod of length L0 is shaped into a ring with  a small gap as shown in figure. On heating the system.

 

a
x decreases, r and increases
b
x and r increases, d decreases
c
x, r and d all increases
d
Data insufficient

detailed solution

Correct option is C

All will increase

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There is a rectangular metal plate in which two cavities in the shape of rectangle and circle are made, as shown with dimensions. P and Q are the centres of these cavities. On heating the plate, which of the following quantities increase?


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