1.In both cocave and covex mirrors,iamge is formed behind the mirror.Then what is the meaning of 'image can be obtained on the screen' and 'image cant be obtained on the screen'?
2.Why is a ral image inverted and and virtual erect?What decides the form of an image(erect or inverted)?
3.In a car,the rear view mirror is convex.A convex mirror does not form a laterally inverted image.The why is ambulance written laterally inverted?

Asked by fairyapoorva11 | 10th Dec, 2014, 10:51: PM

Expert Answer:

The image which can be obtained on a screen is called real image. The real image can be obtained on the screen when light rays coming from object actually meet at a point after reflection from a mirror. When light rays actually pass through a real image, A real image obtained on screen. Real images formed by a concave mirror.
The iamge which cannot be obtained on a screen is called a virtual iamge. A virtual image is obtained when light rays coming from an object only appear to meet a point when produced backwards after reflection from a mirror. A virtual image cannot obtained on the screen because light rays do not actually pass through virtual image.
 
 
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Answered by Priyanka Kumbhar | 11th Dec, 2014, 12:37: PM

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