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Q.

A train is passing through a platform of length 50 m with uniform velocity. It takes 15 s to cross the platform and 5 s to cross a man standing on the platform. Mark the correct option.

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a

The length of train in 35 m

b

The length of train is 50 m

c

The speed of train is $10 m s^{- 1}$

d

The speed of train is $5 m s^{- 1}$

answer is D.

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Detailed Solution

$V = \frac{L + 50}{15}$

and

$V = \frac{L}{5}$

On solving the above 2 equations,

V = 5m/s and Length L = 25m

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A train is passing through a platform of length 50 m with uniform velocity. It takes 15 s to cross the platform and 5 s to cross a man standing on the platform. Mark the correct option.