# Solution - Reflection of Light - Image Formation by Spherical Mirrors - Concave Mirror

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ConceptReflection of Light - Image Formation by Spherical Mirrors - Concave Mirror

#### Questions

State two positions in which a concave mirror produces a magnified image of a given object. List two differences between the two images.

List two possible ways in which a concave mirror can produce a magnified image of an object placed in front of it. State the difference, if any, between these two images.

#### Solution

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Study the following diagram and select the correct statement about the device 'X' :

(A) Device 'X' is a concave mirror of radius of curvature 12 cm

(B) Device 'X' is a concave mirror of focal length 6 cm

(C) Device 'X' is a concave mirror of focal length 12 cm

(D) Device 'X' is a convex of mirror of focal length 12 cm

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A spherical mirror produces an image of magnification −1 on a screen placed at a distance of 40 cm from the mirror:

(i) Write the type of mirror.

(ii) What is the nature of the image formed?

(iii) How far is the object located from the mirror?

(iv) Draw the ray diagram to show the image formation in this case.

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A student wants to project the image of a candle flame on a screen 48 cm in front of a mirror by keeping the flame at a distance of 12 cm from its pole.

(a) Suggest the type of mirror he should use.

(b) Find the linear magnification of the image produced.

(c) How far is the image from its object?

(d) Draw ray diagram to show the image formation in this case.

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A student obtained a sharp image of a candle flame placed at the distant end of the laboratory table on a screen using a concave mirror to determine its focal length. The teacher suggested him to focus a distant building, about 1 km away from the laboratory, for getting more correct value of the focal length. In order to focus the distant building on the same screen, the student should slightly move the

(a) mirror away from the screen

(b) screen away from the mirror

(c) screen towards the mirror

(d) screen towards the building

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The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should the position of the object be relative to the mirror? Draw ray diagram to justify your answer.

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Solution for concept: Reflection of Light - Image Formation by Spherical Mirrors - Concave Mirror. For the course 8th-10th CBSE
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