A piece of wood if left under water , comes to the surface of water. Explain the reason
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a line drawn from any point on a concave mirror to its centre of curvature is called a) normal b) principal axis c) radius of curvature d) focal length
Explanation:
a line drawn from any point on a concave mirror to its centre of curvature is called a) normal b) principal axis c) radius of curvature d) focal length
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