Which of the following trains is the fastest ? - Vidyadip

MCQ

Which of the following trains is the fastest ?

A
$25 m / sec$
B
$1500 m / min$
C
$90 km / hr$
✓
None of these

✓

Answer

Correct option: D.

None of these

(D) None of these
Explanation :
$
\begin{aligned}
25 m / sec & =\left(25 \times \frac{18}{5}\right) km / hr \\
& =90 km / hr
\end{aligned}
$
and
$
\begin{aligned}
25 m / sec & =(25 \times 60) m / min \\
& =1500 m / min
\end{aligned}
$
So, all the three speeds are equal.

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