Question
What is a virtual image? Give one situation where a virtual image is formed.
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Answer
When an image cannot be obtained on a screen, it is called a virtual image.
The image formed by a plane mirror is virtual, because the image cannot be obtained on a screen when placed either in front of the mirror or behind it.
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(a) What optical phenomenon is being demonstrated in this picture? Explain the principle involved using a suitable scientific term.
(b) If the girl tilts the mirror slightly, what will happen to the spot of light on the wall? Justify your answer with the law or rule that governs the change in the path of light.