1.

itA particle is moving along a circle such thatcompletes one revolution in 40 seconds. In 21.minutes 20 seconds, the ratio ldisplacement isISdistance7274%-11

Answer»

Let p be the perimeter of the circular path traversed by the particle

In 2 minutes the displacement will be zero and in next 20 second the displacement will be p/2 (as it will be on diametrically opposite end).

It will make 3.5 revolution in 2 minutes 20 seconds.The distance travelled= 3.5p

Therefore the ratio= (p/2)/(3.5p)=1/7

Option 2 is correct.



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