1. The plants having life span from decades to few hundred years are called perennials.

    The plants having life span from decades to few hundred years are called perennials.

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  2. The bouncing back of the light rays from the surface of an object is called reflection.

    The bouncing back of the light rays from the surface of an object is called reflection.

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  3. The splitting of white light into seven colours is called dispersion of white light.

    The splitting of white light into seven colours is called dispersion of white light.

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