A person moves towards a plane mirror with velocity v. With what velocity will his image move towards him?

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?

An observer moves towards a stationary source of sound with a velocity of one-tenth th velocity of sound.The apparent increase in frequency is :

A boat moves relative to water with a velocity with a velocity v is n times less than the river flow u. At what angle to the stream direction must the boat move to minimize drifting ?

Choose the correct option: David is observing his image in a plane mirror. The distance between the mirror and his image is 4m. If he moves 1m towards the mirror, then the distance between David and his image will be:

A person mass M is hanging from rope fastened to a stationary balloon mass m. and if the person climbs along the rope then with what velocity the balloon will move and in what direction?

Two electrons are moving towards each other, each with a velocity of 10^6ms^-1 . What will be closest distance of approach between them?

During electro-osmosis of Fe(OH)_(3) sol a. Sol particles move towards anode b. Sol particles move towards cathode c. The dispersion medium move towards anode d. The sol particles do not move in either direction