A tiny mirror M is fixed on a piece of cardboard placed on a table. The cardboard is illuminated by light from a bulb. The position of the eye with respect to the position of the bulb is shown in Fig. as A, B, C and D. In which position mirror will be visible? a. A b. B c. C d. D

Answer: (a) A

When a ray of light from the bulb strikes the mirror M, according to the laws of reflection of light, it will be reflected back with the angle of incidence equal to the angle of reflection in of case A.

Law of reflection

Law of reflection is defined as the principle when the light rays fall on the smooth surface, the angle of reflection is equal to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in the same plane.

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