A) 150
B) 120
C) 100
D) 90
Correct Answer: C
Solution :
Relative speed\[=(84+6)\] \[=90\]kmph \[=\left( 90\times \frac{5}{18} \right)\text{m/sec}\] \[=25\,\,\text{m/sec}\] \[\therefore \]Length of train \[=\operatorname{Relative}\,\,speed\,\,\times \,\,\text{Time}\] \[=25\times 4=100\]metreYou need to login to perform this action.
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