Draw ray diagrams showing the image formation by a convex mirror when an object is placed
(a) at infinity
(b) at finite distance from the mirror

Academic Physics NCERT Class 10

$(a)$. Formation of image when the object is placed at infinity.

$(b)$. Formation of image when the object is placed somewhere between infinity and the pole:

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Updated on: 10-Oct-2022

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Where would the image be formed by a convex mirror if the object is placed:(a) between infinity and pole of the mirror?(b) at infinity?Draw labelled ray-diagrams to show the formation of image in both the case.
An object is placed at a distance of 10 cm from a convex mirror of focal length 5 cm.(i) Draw a ray-diagram showing the formation image(ii) State two characteristics of the image formed(iii) Calculate the distance of the image from mirror.
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When an object is placed at a distance of 15 cm from a concave mirror, its image is formed at 10 cm in front of the mirror. Calculate the focal length of the mirror.
An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm.(a) Draw a ray diagram for the formation of image.(b) Calculate the image distance.(c) State two characteristics of the image formed.
(a) Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.(b) What happens to the image when the object is moved away from the mirror gradually?(c) State three characteristics of the image formed by a convex mirror.
An object is placed at a distance of 40cm in front of a convex mirror of radius of curvature 40cm. List four characteristics of the image formed by the mirror.
The radius of curvature of a concave mirror is 50cm. Where should be an object be placed from the mirror so at to form its image at infinity? Justify your answer.
(a) Draw a labelled ray diagram to show the formation of image in a convex-mirror when the object is at infinity. Mark clearly the pole and focus of the mirror in the diagram.(b) State three characteristics of the image formed in this case.(c) Draw diagram to show how a convex mirror can be used to give a large field of view.
If an object is at infinity (very large distance) in front of a concave mirror, where is the image formed?
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An object is placed at a distance of 6 cm from a convex mirror of focal length 12 cm. Find the position and nature of the image.
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(a) An object is placed 10 cm from a lens of focal length 5 cm. Draw the ray diagrams to show the formation of image if the lens is (i) converging, and (ii) perging.(b) State one practical use each of convex mirror, concave mirror, convex lens and concave lens.
At what distance from a concave mirror of focal length 10 cm should an object be placed so that:(a) its real image is formed 20 cm from the mirror?(b) its virtual image is formed 20 cm from the mirror?

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