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A train moving at a rate of 36 km/hr cro...

A train moving at a rate of 36 km/hr crosses a standing man in 10 seconds. It will cross a platform 55 metres long in

A

7 second /7 सेकंड

B

`15 1/2` second /`15 1/2` सेकंड

C

`5 `1/2` second /`5 1/2` सेकंड

D

6 second/6 सेकंड

Text Solution

Verified by Experts

The correct Answer is:
B
रेलगाड़ी की चाल `= 36 km//hr = 36xx5/18m//s = 10 m/s`
`:. " रेलगाड़ी की लंबाई " = 10 xx 10 = 100m`
`:. 55 " मी. लंबी रेलगाड़ी को पार करने में लगा समय " =(100+55)/10 =155/10`
`=151/2sec`.
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