A) 2.5 s
B) 10 s
C) 20 s
D) 5 s
Correct Answer: B
Solution :
\[\frac{50-49.9}{5}=K\,\left( \frac{50+49.9}{2}-30 \right)\] ?..(i) \[\frac{40-39.9}{t}=K\,\left[ \frac{40+39.9}{2}-30 \right]\] ?..(ii) from equations (i) and (ii) we get t » 10 sec.You need to login to perform this action.
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