An object is placed at a distance of 12 cm from a convex lens. A convex mirror of focal length 15 cm is placed on another side of the lens at 8 cm as shown in the figure. The image of the object coinc

Question

An object is placed at a distance of 12 cm from a convex lens. A convex mirror of focal length 15 cm is placed on another side of the lens at 8 cm as shown in the figure. The image of the object coincides with the object. When the convex mirror is removed, a real and inverted image is formed at a position. The distance of the image from the object will be _ _ _ cm

TestHub · Accepted Answer

For the object to coincide with the image, the light must fall perpendicularly to the mirror. This means that the light will have to converge at $C$ of the mirror. Without the mirror also, the light would coverage at $C$ . So the distance is: $= 12 + 8 + 30 = 50 cm$ .

Physics - Geometrical Optics Question with Solution | TestHub

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