A candle flame 3 cm high is placed at a distance of 3m from a wall. How far from the wall must a concave mirror be placed so that it may form 9 cm high image of the flame on the same wall ? Also find the focal length of the mirror.

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 2.5 cm high candle flame is placed at a distance of 2.5 m from a wall. How far from the wall a concave mirror must be placed so that a 7.5 cm high inverted image of the flame is formed on the same wall? Also calculate the focal length of the mirror.

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 ?

An object of 1cm^(2) face area is placed at a distance of 1.5m from a screen. How far from the object should a concave mirror be placed so that it forms 4 cm^(2) image of object on the screen? Also, calculate the focal length of the mirror.

A concave mirror of focal length 10 cm is placed at a distance 35 cm from a wall. How far from the wall should an object be placed so that its real image is formed on the wall ?