4. Answer the following question 1 which device is used in the defence section. for protection, based on property of seflection of reflected light?
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Property reflection of light =
a statement in optics: when light falls upon a plane surface it is so reflected that the angle of reflection is equal to the angle of incidence and that the incident ray, reflected ray, and normal ray all lie in the plane of incidence.
Pinhole camera is used for protection based on property of seflection of reflected light.
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