A boy is running towards a plane mirror with a speed of `2 m s^(-1)`.With what speed the image of the boy approach him?

If you sit in a parked car,you glance in the rear view mirror of radius of curvature 2 m and notice a jogger approaching.If the jogger is running at a speed of 5 ms ^(-1) ,how fast is the image of the jogger moving,when the jogger is 29 m

If you sit in a parked car,you glance in the rear view mirror of radius of curvature 2 m and notice a jogger approaching.If the jogger is running at a speed of 5 ms ^(-1) ,how fast is the image of the jogger moving,when the jogger is 19 m

If you sit in a parked car,you glance in the rear view mirror of radius of curvature 2 m and notice a jogger approaching.If the jogger is running at a speed of 5 ms ^(-1) ,how fast is the image of the jogger moving,when the jogger is 39 m

If you sit in a parked car,you glance in the rear view mirror of radius of curvature 2 m and notice a jogger approaching.If the jogger is running at a speed of 5 ms ^(-1) ,how fast is the image of the jogger moving,when the jogger is 9 m away.

An object is approaching a thin convex lens of focal length 0.3 m with a speed of 0.01 m s^(-1) .Find the magnitudes of the rates of change of position and lateral magnification of image,when the object is at distacne of 0.4 m from the lens.

A SONAR system fixed in a submarine operates at a frequency 40.0 kHz. An enemy submarine moves towards the SONAR with a speed of 360 km h^-1 . What is the frequency of sound reflected by the submarine ?Take the speed of sound in water to be 1450m s^-1 .

What is de-Broglie waveelngth of a 3 kg object moveing with a speed of 2 m s^(-1) ?

A police van moving on a highway with a speed of 30 km h^-1 fires a bullet at a thiefs car speeding away in the same direction with a speed of 192 km h^-1 . If the muzzle speed of the bullet is 150 m s^-1 with what speed does the bullet hit the thiefs car ? (Note: Obtain that speed which is relevant for damaging the thief s car).

An ant is approaching a convex lens with a uniform speed upto first focus.How would the speed of the image of the ant formed by lens change?

A 120 m long train is moving west at a speed of 10 m s^-1 .A small bird flying cast at a speed of 5 ms^-1 crosses the train.What is the time taken by the bird to cross the train?