MCQ
A circular disc is shown. On heating, $d_1$ increases by $0.3\%$ , then $d_2$ will
- ADecrease by $0.1\%$
- BDecrease by $0.3\%$
- CIncrease by $0.1\%$
- ✓Increase by $0.3\%$
✓
Answer
Correct option: D.
Increase by $0.3\%$
d
Expansion of a metal is same as photographic enlargement $\Rightarrow d_{1}$ will increase by $0.3 \%$
Expansion of a metal is same as photographic enlargement $\Rightarrow d_{1}$ will increase by $0.3 \%$
$\Rightarrow d_{1}, 0.3 \%$
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