Question

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Answer 1

1. an image that cannot be e obtained on a screen is called a Virtual Image

Note :- The rays of virtual image is only appear to originate from a common point behind the mirror because of collection of focus points of light rays coming from an object usually formed by diverge mirror that is convex mirrors and are formed by concave mirrors when the object is placed in front of F. 7. and it's just opposite is real image usually formed only by a concave mirror.

2. the characteristic feature of image formed by a plane mirror are following :-

• it always form Virtual and erect image
• it's size of the image is equal to the size of the object
• it is use to see the reflection of an object.
• it is used in automobiles, shaving mirrors, dentists' mirror, and solar cookers etc.