A) 0.3 m
B) 0.5 m
C) 0.7 m
D) 0.9 m
Correct Answer: A
Solution :
\[{{(\text{Range})}_{1}}={{(\text{Range})}_{2}}\] \[\sqrt{2g\,(\ell -0.1)}\sqrt{\frac{2\times 0.1}{g}}=\sqrt{2g\,(\ell -0.2)}\sqrt{\frac{2\times 0.2}{g}}\] \[\ell =0.3\]You need to login to perform this action.
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