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IIT JEE - 02 Q. A thief is running away in a car with velocity of 20 m/s. A police jeep is following him, which is sighted by thief in his rear view mirror, which is a convex mirror of focal length 10 m. He observes that the image of jeep is moving towards him with a velocity of 1 cm/s. If the magnification of mirror for the jeep at that time is 1/10, Find : a) the actual speed of jeep, b) rate at which magnification is changing. Assume the police jeep is on axis of the mirror.

IIT JEE - 02


Q. A thief is running away in a car with velocity of 20 m/s. A police jeep is following him, which is sighted by thief in his rear view mirror, which is a convex mirror of focal length 10 m. He observes that the image of jeep is moving towards him with a velocity of 1 cm/s. If the magnification of mirror for the jeep at that time is 1/10, Find :


a) the actual speed of jeep,


b) rate at which magnification is changing.


Assume the police jeep is on axis of the mirror.

Grade:Upto college level

1 Answers

Ronak Jain
16 Points
13 years ago

Answer Please...Hav 2 confirm my answer.

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