41. A train 250 meter long, running with a speed of 50 km/hr will pass an electric pole in ?

1. 1. 30 seconds

   
   
   

   2. 18 seconds

   
   
   

   3. 72 seconds

   
   
   

   4. 60 seconds

   
   
   

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1. View Hint View Answer Discuss in Forum

   ∵ Speed of the train = 50 x (5/18) = 125/9 m/sec
   ∴ Time taken by the train to pass the pole = 250 x (9/125) = 18 sec

   Correct Option: B

   ∵ Speed of the train = 50 x (5/18) = 125/9 m/sec
   ∴ Time taken by the train to pass the pole = 250 x (9/125) = 18 sec

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42. A speed of 16 meters per second is the same as ?

1. 1. 40.3 km/hr

   
   
   

   2. 57.6 km/hr

   
   
   

   3. 51.16 km/hr

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   16 m/sec = 16 x (18/5) = 57.6 km/hr

   Correct Option: B

   16 m/sec = 16 x (18/5) = 57.6 km/hr

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43. A train moves with the speed of 180 km/hr, then its speed in meters per second is ?

1. 1. 5

   
   
   

   2. 30

   
   
   

   3. 40

   
   
   

   4. 50

   
   
   

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1. View Hint View Answer Discuss in Forum

   180 km/hr = 180 x (5/18) = 50 m/sec
   

   Correct Option: D

   180 km/hr = 180 x (5/18) = 50 m/sec

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