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A man in a car at location Q on a straig...

A man in a car at location Q on a straight highway is moving with speed v He decides to reach a point P in a field at a distance d from the highway (point M) as shown in th e figure . Speed of the car in the field is half to that on the highway what should be the distacne RM so that the time taken to reach P is minimum ?

A

d

B

`(d)/sqrt(3)`

C

`(d)/(2)`

D

`(d)/sqrt(2)`

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