Physics-
General
Easy
Question
Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed 
along the track so that the relative velocities of the trains with respect to the wind are in the ratio 
, then the speed of each train must be
The correct answer is:
Let the speed of trains be 
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Look at the graphs [a] to [d] carefully and indicate which of these possibly represents one dimensional motion of a particle
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Assertion:Galvanised iron does not rust.
Reason :Zinc has a more negative electrode potential than iron.
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