man of height h walks in a straight path towards a lamp post of height H with uniform velocity u. Then the velocity of the edge of the shadow on the ground will be :-

A man of 2 m height walks at a uniform speed of 6km/h away from a lamp post of 6m height. The rate at which the length of his shadow increases is

A man of 2m height walks at a uniform speed of 6kmh^(-1) away from a lamp post of 6m height. The rate at which the length of his shadow increase in

A man of height 2m walks at a uniform speed of 5km/h away from a lamp post which is 6m high. Find the rate at which the length of his shadow increases.

A man of height 1.5 meters walks toward a lamp post of height 4.5 meters, at the rate of (3/4) meter/sec. Find the rate at which the tip of the shadow is moving.

A vertical lamp-post of height h stands at a point on the boundary of a circular field. A man of height a is running round the boundary. Prove that the end of the shadow of the man will also travel on a circle. Find the ratio of the radii of the two circles.

A man 2 metres tall walks away from a lamp post 5 metres height at the rate of 4.8 km/hr. The rate of increase of the length of his shadow, is

A man 2 metres tall walks away from a lamp post 5 metres height at the rate of 4.8 km/hr. The rate of increase of the length of his shadow, is