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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Draw a ray diagram to show the formation of image of an object placed beyond the centre of curvature of a concave mirror. State the position, size and nature of the image. - Physics

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प्रश्न

Draw a ray diagram to show the formation of the image of an object placed beyond the centre of curvature of a concave mirror. State the position, size and nature of the image.

आकृति
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उत्तर

OBJECT PLACED BEYOND C: Image is formed :

A real, inverted and smaller image is formed between the centre of curvature and focus
Position: between C and F.
Size smaller than an object.

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अध्याय 5: Light Energy - Short/long Answer Question [पृष्ठ १०१]

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सेलिना Concise Physics [English] Class 8 ICSE
अध्याय 5 Light Energy
Short/long Answer Question | Q 36 | पृष्ठ १०१

संबंधित प्रश्न

Draw the following diagram in which a ray of light is incident on a concave/convex mirror on your answer sheet. Show the path of this ray, after reflection, in each case.


To construct ray diagrams, two rays of light are generally so chosen that it is easy to determine their directions after reflection from a mirror. Choose two such rays and state the path/direction of these rays after reflection from a concave mirror. Use these two rays to find the position and nature of the image of an object placed at a distance of 8 cm from a concave mirror of focal length 12 cm.


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.


For what position of an object, a real and diminished image is formed by a concave mirror? 

 


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


Give two uses of concave mirrors. Explain why you would choose concave mirrors for these uses.


An object 3 cm high is placed at a distance of 8 cm from a concave mirror which produces a virtual image 4.5 cm high:

(i) What is the focal length of the mirror?
(ii) What is the position of image?
(iii) Draw a ray-diagram to show the formation of image.


Why are concave mirrors used in solar devices? 


In which equipment/s do you find ___________________

(i) a concave mirror.
(ii) a convex lens
(iii) reflecting mirrors?

Between which two points of a concave mirror should an object be placed to obtain a magnification of -2?


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