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Two large plane mirrors PM and PN are arrange as shown. The length of the part of large screen SS ' in which two images of the object placed at P can be seen is x (in m). Find the value 3 x.

Correct answer

2

Step-by-step solution

The normals for the mirror PM is PS' and the normal to the mirror PN is PS. From the geometry of the figure it can be seen that SS ' = x = 2 3 . So, 3 x = 2

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