A) 0.1 N
B) 0.3 N
C) 0.15 N
D) 0.4 N
Correct Answer: A
Solution :
\[{{N}_{1}}{{V}_{1}}={{N}_{2}}{{V}_{2}}\] \[15\times 0.2\text{ }=\text{ }30\times x\] \[\therefore \ x\ =\ 0.1\ N\]
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