State the position- size and nature of image formed in a concave mirror when the object is placed at infinity-At focus- point-sized and real amp- invertedAt centre of curvature- enlarged and real amp- invertedAt pole- highly enlarged and virtual amp- erectAt focus- diminished and virtual amp- erect

The correct option is A At focus, point sized and real amp; invertedWhen the object is placed at infinity, the rays travelling from the object parallel to t ...

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Physics

Image Formation by Spherical Mirrors

State the pos...

Question

State the position, size and nature of image formed in a concave mirror when the object is placed at infinity:

At focus, point-sized and real & inverted

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At focus, diminished and virtual & erect

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At centre of curvature, enlarged and real & inverted

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At pole, highly enlarged and virtual & erect

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Solution

The correct option is A At focus, point-sized and real & inverted
When the object is placed at infinity, the rays travelling from the object parallel to the principal axis will be incident on the concave mirror and converge at the principal focus of the mirror. The image formed will be real, inverted and highly diminished or point-sized.
So option A is correct.

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Similar questions

The image formed by a concave mirror is real, inverted and highly diminished (much smaller than the object). The object must be : (a) between pole and focus (b) at focus (c) at the centre of curvature (d) at infinity

A concave lens forms the image of an object which is :

(a) virtual, inverted, and diminished

(b) virtual, upright, and diminished

(d) virtual, upright, and enlarged.

For the object placed between the optical centre and focus of a convex lens, the image is :

(a) real and enlarged

(b) real and diminished

(d) virtual and diminished.

The image formed by a concave mirror is real, inverted and of the same size as the object. The position of the object must then be : (a) at the focus (b) between the centre of curvature and focus (c) at the centre of curvature (d) beyond the centre of curvature

Q. Use the mirror equation to deduce that:

A) An object placed between f and 2f of a concave mirror produces a real image beyond 2f.

B) A convex mirror always produces a virtual image independent of the location of the object.

C) The virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole.

D) An object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.

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