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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  

Question

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.

Solution

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The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?
(a) Between the principal focus and the centre of curvature
(b) At the centre of curvature
(c) Beyond the centre of curvature
(d) Between the pole of the mirror and its principal focus.

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

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