Properties Of Matter Ques 20
- A man grows into a giant such that his linear dimensions increase by a factor of 9 . Assuming that his density remains same, the stress in the leg will change by a factor of
(2017 Main)
(a) $\frac{1}{9}$
(b) 81
(c) $\frac{1}{81}$
(d) 9
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Answer:
Correct Answer: 20.( d )
Solution:
- Stress $=\frac{\text { Weight }}{\text { Area }}=\frac{9^3 \times W_0}{9^2 \times A_0}=9\left(\frac{W_0}{A_0}\right)$
Hence, the stress increases by a factor of 9 .
BETA
