A statue 4 metres high sits on a column 5.6 metres high. How far from the column must a man,whose eye level is 1.6 metres from the ground, stand in order to have the most favourable view of the statue.

A statue 4 meters high sits on a column 5.6 meters high . How far from the column must a man, whose eye level is 1.6 meters from the ground, stand in order to see the statue at the greatest angle ?

A candle flame 2 cm high is placed at distance of 2 meter from a wall. How far from the wall must a concave mirror to placed in order to form an image of the flame 6 cm high on the wall ?

A candle flame 2 cm high is placed at distance of 2 meter from a wall. How far from the wall must a concave mirror to placed in order to form an image of the flame 6 cm high on the wall ?

A candle is flame 1 cm high is placed at a distance of 1.5 metre from a wall.How far from the wall must a concave mirror be placed ,so that it may form a 2 cmhigh image of the flame on the flame on the same wall?Also find the focal length of the mirror.

A statue 8 meters high standing on the top of a tower 64 meters high, on the bank of a river, subtends at a point A on the opposite bank, directly facing the tower, the same angle as subtends at the same point A by man of height 2 meters standing at the base of the tower. Prove that the breadth of the river is 16sqrt(6) meters.

A statue 8 meters high standing on the top of a tower 64 meters high, on the bank of a river, subtends at a point A on the opposite bank, directly facing the tower, the same angle as subtends at the same point A by man of height 2 meters standing at the base of the tower. Prove that the breadth of the river is 16sqrt(6) meters.

A man 2 metre high walks at a uniform speed 5 metre/hour away from a lamp post 6 metre high. The rate at which the length of his shadow increases is