Aptitude - Problems on Trains - Discussion

Super, thank you for your detailed explanation.

Thank you so much for all your explanation.

Thank you everyone for explaining the answer.

Thanks.

Thank you all for explaining very well.

According to antenna, which we design we say that frequency is between 1 to 5 Mhz or other think we can define values between 1 to 2 Mhz and can use them for infinite frequencies because if we consider frequency between 1 to 2 MHz then if we see then the output can be
1.1,1.111,1.115677,1.9876,1.11153565.....infinity now. Then why we are using this is because if you increase the value before a point it will have a large change as compared to adding values after the point.

And this is because even if there is a small change in frequency then both signals are uncorrelated to large extent.

Speed = distance/time taken.
60 *1000 = length/ 9/3600.

1 hr = 3600 seconds.
9/3600*60*1000 = 150 m.

Thanks for the explanations.

Thanks all for explaining the answer.

Thanks all.