Question

5.
The rear view mirror of a car is a plane mirror
. A driver is reversing his car at a speed of
4 m/s. The driver sees, in his rear view mirror, the image of a scooter parked
behind his car. The speed, at which its image appears to approach the driver
will be
2 m/s
4 m/s
8 m/s
16 m/s
194​

Answer 1

your answer is 4m/s

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Answer 2

Answer:

(iii) 4 m/s

The speed of the car is 2 m/s which means the car is approaching the truck with a speed of 2 m per second. The distance between the car and truck will decrease at a double rate. This is because the image of the truck will travel a distance twice the distance travelled by the car in equal time. Hence, the image of the truck will appear to approach the driver with the speed of 2 ×2 = 4 m/s.