Where must an object be placed in front of a concave mirror of radius R in order for the image to be superimposed upon the object? Is this image real or virtual?
Answers
Explanation:
In case of concave mirrors, the distance of the image from the mirror is the same as the distance of the object from the mirror only when the object is placed at the radius of curvature i.e. when the distance of the object from the mirror is R.
The image would be real and hence inverted. The height of the image would be the same as the height of the object.
Hence, for the image to be superimposed upon the object, the object should be placed at the radius of curvature.
However, it should be noted that for the superimposition to hold, half the object should be below the principal axis and the other half should be above the principal axis since the image would be inverted.
In case of concave mirrors, the distance of the image from the mirror is the same as the distance of the object from the mirror only when the object is placed at the radius of curvature i.e. when the distance of the object from the mirror is R.
The image would be real and hence inverted. The height of the image would be the same as the height of the object.