What happens when object is placed at focus of a convex mirror?
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the Image form in concave mirror is real inverted and behind the mirror
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When the object is placed at principal focus
When the object AB is placed at the principal focus, then the parallel ray of light AD passes through the principal focus F giving us the reflected ray DX. And the second ray of light AE passing through the centre of curvature C is reflected along the same path forming the reflected ray EY. In this case, both the reflected rays i.e. DX and EY become parallel to each other so these rays cannot intersect each other and the image will be formed at infinity. The image formed in this case will be highly enlarged, real and inverted.
When the object AB is placed at the principal focus, then the parallel ray of light AD passes through the principal focus F giving us the reflected ray DX. And the second ray of light AE passing through the centre of curvature C is reflected along the same path forming the reflected ray EY. In this case, both the reflected rays i.e. DX and EY become parallel to each other so these rays cannot intersect each other and the image will be formed at infinity. The image formed in this case will be highly enlarged, real and inverted.
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