PhysicsA plane mirror ‘M’ and a concave mirror ‘X’ are kept at a separation of 40 cm with their reflecting faces facing each other as shown in figure. An object AB is kept perpendicular to the principal axis in position (1). Considering successive reflections first at mirror ‘X’ and then at ‘M’, a real image is formed in front of ‘M’ at a normal distance 8 cm from it. If the object is moved to new position (2), the real image is formed at 20 cm from ‘M’ with the reflections as described earlier.

A plane mirror 'M' and a concave mirror 'X' are kept at a separation of 40 cm with their reflecting faces facing each other as shown in figure. An object AB is kept perpendicular to the principal axis in position (1). Considering successive reflections first at mirror 'X' and then at 'M', a real image is formed in front of ‘M’ at a normal distance 8 cm from it. If the object is moved to new position (2), the real image is formed at 20 cm from 'M' with the reflections as described earlier.

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