NIELIT 2019 Feb Scientist D - Section D: 23

Question

A train enters into a tunnel $AB$ at $A$ and exits at $B$. A jackal is sitting at $O$ in another by passing tunnel $AOB$, which is connected to $AB$ at $A$ and $B$, where $OA$ is perpendicular to $OB$. A cat is sitting at $P$ inside the tunnel $AB$ making the shortest possible distance between $O$ and $P$, such that $AO=30$ km and $PB=32$ km. When a train before entering into the tunnel $AB$ makes a whistle somewhere before $A$, the jackal and cat run towards $A$ they meet with accident at the entrance $A$. The ratio of speeds of jackal and cat is :

• A. $\frac{2}{3}$
• B. $\frac{4}{3}$
• C. $\frac{5}{3}$
• D. $\frac{3}{2}$

Answer 1

 

 

Solution :

https://www.doubtnut.com/question-answer/a-train-enters-into-a-tunnel-ab-at-a-and-exits-at-b-a-jackal-is-sitting-at-0-in-another-by-passing-t-7048