Light travels along --------line, Straight , Side, Right , Left, Any polished or shiny surface acts as a --------, Mirror , Real image, Virtual image, Rear view , A concave mirror can form a --------image , Erect , Spherical , Side, Left side , White light is composed of -------- colors , Seven, Six, Four, Three, When the object is close to theconvex lens which image is formed --------, Virtual , Smaller , Spherical , Real .

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