CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Mirror Formula Examples

A thief is ru...

Question

A thief is running away in a car with velocity of 20m/s.A police jeep is following him ,which is sighted by thief in his rear view mirror ,which is a conves mirror of focal lenght 10m .He observes that the image of jeep is moving towards him with a elocity of 1cm/s.If the magnification of mirror for jeep at that time is 1/10.Find 1) the actual speed of jeep. 2) rate at which magnification is changing Assume the police jeep is on the axis of the mirror

Open in App

Solution

Suggest Corrections

thumbs-up

1

Similar questions

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 a thief in his rear view mirror, of focal length 10m. He observes that image of jeep is moving towards him with a velocity of 1cm/s If the magnification of the mirror for the jeep at that time is

\frac{1}{10}

, then at some instant of time (Assume jeep to be point object moving on the axes of mirror)

Q. Rate at which magnification is changing is given as

x \times 10^{3} / s

x

. Assume that police jeep is on axis of the mirror.

Q. Find actual speed of jeep. Assume that police jeep is on axis of the mirror.

Q. A thief is running away on a straight road with a speed of 9 ms

^{- 1}

. A police man chases him on a jeep moving at a speed of 10 ms

^{- 1}

. If the instantaneous separation of the jeep from the motorcycle is 100 m, how long will it take for the police man to catch the thief?

Q. A thief is running away on a straight road with a speed of

9 m s^{- 1}

. A police man chases him on a jeep moving at a speed of

10 m s^{- 1}

If the instantaneous separation of the jeep from the motorcycle is 100 m, how long will it take. for the police man to catch the thief?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Natural Phenomena

PHYSICS

Watch in App

explore_more_icon

Explore more

Mirror Formula Examples

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon