Question

Iron rim is made slightly smaller than the wooden wheel .The rim is usually heated before fixing into the wooden,because on heating the iron rim. [a] expands and fits onto the wooden wheel. [b] contracts and fits onto the wooden wheel. [c] no change in the size takes place. [d] exapands first,then on cooling contracts and fits onto the wooden wheel​

Answer 1

d option is correct

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Note: Answer is confirmed

Answer 2

Answer:

b) contacts and fits into the wooden wheel.