Foundation
Physics Foundation
Reflection from plane mirror
Question
An object is placed at 10cm in front of the plane mirror. The image is formed :
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Solution
In a plane mirror, the image is always virtual, upright, and located the same distance behind the mirror as the object is in front of it. This is a fundamental property of reflection.
If the object distance is , then the image distance is . The negative sign conventionally indicates the image is formed behind the mirror.
Therefore, the image is formed 10 cm behind the mirror.
Final Answer: 10cm behind the mirror.