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Biology IX | Tissues, Organs, Organ System, Organism | Part 2
Tissues, Organs, Organ System, Organism | Part 2 ANIMAL TISSUES Cell are organized into four types of tissues in higher animals including man (i) Epithelial tissue : – It is a protective covering tissue and forms a continuous layer on the entire body surface and cavities inside the body and its parts. The skin, surface…
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Physics X | Light – Reflection and Refraction | REFLECTION OF LIGHT
REFLECTION OF LIGHT A highly polished surface, such as a mirror, reflects most of the light falling on it. You are already familiar with the laws of reflection of light. Let us recall these laws – (i) The angle of incidence is equal to the angle of reflection, and (ii) The incident ray, the normal…