ICSE Class 10 Physics 2013 Solved Paper

A ray of light is moving from a rarer medium to a denser medium and strikes a plane mirror placed at $90^{∘}$ to the direction of the ray as shown in the diagram.

Question : 15 of 70

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Name the principle you have used to mark the arrow to show the direction of the ray.

Solution:

Principle of reversibility of light.

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