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Reflection of Light

• Light travels only in a straight line in all directions.
• This phenomenon is called the rectilinear propagation of light.
• Light emanating from a source (bulb) travels in all directions.
• The formation of image in a pinhole camera is a proof of rectilinear propagation of light.
• … Medium Speed of light (in m/s) Air/ Vacuum 3$×$108 Water 2.25$×$108

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