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CBSE Class 10 Answered

can you please explain to me in detail the concept of real and virtual images.i am not able to understand even a bit of it.
Asked by DEVANSH SHARMA | 28 Oct, 2010, 12:00: AM
answered-by-expert Expert Answer
Dear student
 
Real images can be obtained on the screen. The rays of light after reflection or refraction actually meet at the screen to produce the real image. For example, when sun rays pass through fine hole in the wall of the room, it results in a bright spot on the wall across...this is real image of the sun.
 
Virtual images cannot be obtained on the screen. Thats because there are no reflected or refracted rays that actually reach teh screen. In order to see a virtual image one has to look into the reflecting surface (like a mirror) or refarctong surface (like a glass).
For example, when u look at your own image in the looking glass every morning, u are looking at your virtual image. U look into the mirror so as to be able to see your virtual image.No matter where u keep a screen behind the mirror or in front of the mirror, u can never obtain your real image, because there are no rays getting reflected from the mirror & that can converge at the screen.
 
Similary images seen in the rear view mirrors fixed in our cars are virtual images.
 
Images seen of the the sun during solar eclipse using pin hole cameras are real images.
 
We hope that your query is resolved.
 
Regards
Team
TopperLearning
 
 
 
Answered by | 30 Oct, 2010, 12:45: PM

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