A girl of height 90 cm is walking away from the base of a lamp-post at a speed of `1.2m"/"s`. If the lamp is `3.6 m` above the ground, find the length of her shadow after 4 seconds.

A girl of height 90 cm is walking away from the base of a lamp post at a speed of 1.2 m/sec. If the lamp post is 3.6m above the ground, find the length of her shadow after 4 seconds.

A girl of height 100 cm is walking away from the base of a lamp-post at a speed of 1.9m"/"s . If the lamp is 5m above the ground, find the length of her shadow after 4 seconds.

A man 2m tall walks at a uniform speed of 4m/min away from a lamp post 6m high. Find the rate at which the length of his shadow decreases.

A ladder is placed againt a wall such that its foot remains at a distance of 2.5 m from the wa and its top reaches a window 6 m above the ground. Find the length of the ladder in cm.

A ladder is placed against a wall such that its foot is at a distance of 2.5 cm from the wall and its top reaches a window 6 m above the ground. Find the length of the ladder.

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

In the figure, AC is the length of a pole standing vertical on the ground. The pole is bent at point B, so that the top of the pole touches the ground at a point 15 m away from the base of the pole. If the length of the pole is 25m, find the length of the upper part of the pole.

A stone is projected from the ground in such a direction so as to hit a bird on the top of a telegraph post of height h and attains the maximum height of 2h above the ground. If at the insatant of projection, the bird were to fly away horizontally with a uniform speed, find the ratio between the horizontal velocity of bird and the horizontal component of velocity of stone, if the stone hits the bird while descending.

A 1.8m tall girl stands at a distance of 4.6m from a lamp post and casts a 5.4m long shadow on the ground. Then, the height of the lamp post is………..m

Ravi is 1.82m tall. He wants to find the height of a tree in his backyard. From the tree’s base he walked 12.20 m. along the tree’s shadow to a position where the end of his shadow exactly overlaps the end of the tree’s shadow. He is now 6.10m from the end of the shadow. How tall is the tree ?