CBSE Class 7 Science Light
Properties of Light
Reflection of Light
Laws of reflection 1: The incident ray, the reflected ray and the normal at the point of incidence, all lie in the same plane.
Laws of reflection 2: The angle of incidence is equal to the angle of reflection.
Lateral Inversion is the interchange of left and right side of an object as viewed in a plane mirror.
Dispersion of Light
Different colours undergo different deviations on passing through prism.
If a second identical prism is placed in an inverted position with respect to the first prism, all the seven colours recombine to form white light.
Rainbow is a natural spectrum appearing in the sky after a rain shower due to dispersion of light.
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