An object is placed infront of a concave mirror of focal lenght 30cm. Virtual image of object is obtained at a distance of 20cm from the mirror. Calculate the positon of the object? AN LEO BIRD! 18 May
At what distance from a concave mirror of focal length 10 cm should an object be placed so that : (a) its real image is formed 20 cm from the mirror ? (b) its virtual image is formed 20 cm from the mirror ? AN LEO BIRD! 18 May