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Lakhmir Singh & Manjit Kaur - Physics

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Q. 224.7( 7 Votes )

Briefly describe how you would find the focal length of a concave mirror quickly but approximately.

Class 10th Lakhmir Singh & Manjit Kaur - Physics 4. Reflection of light

Answer :

To find the focal length of a concave mirror quickly but approximately we can apply few practical skills

1) When image is formed at focus that means object is at considerable distance.

2) Sharp image is formed when object is at focus such that focallength is equal to object distance.

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PREVIOUSMake labeled ray diagrams to illustrate the formation of :(a) a real image by a converging mirror.(b) a virtual image by a converging mirror.Mark clearly the pole, focus, centre of curvature and position of object in each case.NEXTWhich type of mirror is used in a solar furnace? Support your answer with reason.

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Lakhmir Singh & Manjit Kaur - Physics