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A car is moving with at a constant speed of 60km h^-1 on a straight road. Looking at the rear-view mirror, the driver finds that the car following him is at a distance of 100m and is approaching with a speed of 5km h^-1. In order to keep track of the car in the rear, the driver begins to glance alternatively at the rear and side mirror of his car after every 2s till the other car overtakes. If the the following statement(s) is/are correct?

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In the side mirror, the speed of the approaching car would appear to increase as the distance between the cars decreases.

In the rear view mirror the speed of the approaching car would appear to decrease as the distance between the cars decreases.

The speed of the car in the rear is 65 km/h.

In the side mirror the car in the rear would appear to approach with a speed of 5 km h^-1 to the driver of the leading car.

answer is D.

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Detailed Solution

When rear car approaches, initially it appears at rest as image is formed at focus. When car approaches nearer this speed will appear to increase.

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