A) 2.9 cm
B) 5.1 cm
C) 4 cm
D) 1.7 cm
Correct Answer: B
Solution :
[b] \[{{10}^{-}}^{4}=Ay\] |
\[{{10}^{-4}}={{10}^{-4}}\,\times \,\,\sqrt{2gh}\] |
\[h=\frac{1}{2g}\,=\,\frac{100}{2\times 9.8}\,=\,5.1\,cm\,\] |
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