Concept explainers
Possibility of a virtual image to be photographed.
Explanation of Solution
Introduction:
An optical image is said to be virtual, if it is achieved at the point where the rays seem to diverge but do not actually converge.
Virtual images are optical images which cannot be obtained on a screen as these are not formed by actual convergence of rays but by extensions of the diverging rays or these can be understood as the optical images which are not formed by actual intersection of the rays, instead one has to extend back the rays to a point behind the lens or mirror.
The rays do not go through image physically but just appear as they are originating from the image. Virtual images cannot be brought to a screen, but, this does not mean these cannot be photographed.
When a person sees herself in the mirror, the image formed is the virtual image, it is visible on screen as when these diverging rays enter the eyes,these are focused to form a real image on the retina. Also, these images can be photographed as well.
Conclusion:
Thus, a virtual image can be photographed. For instance, one can photograph the virtual image of oneself obtained in the plane mirror.
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Chapter 32 Solutions
Physics for Scientists and Engineers
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