1) When an object blocks the path of light, what is formed? a) A shadow b) A reflection  c) A fog 2) Materials through which light cannot pass are called  a) transparent b) translucent c) opaque 3) Which of the following absorb light most a) Leaf b) Black wallet c) Lemon Juice 4) Which of the following materials can transmit most of the light? a) A placid lake surface b) A glass block c) A spot of black ink d) A piece of blank paper 5) A light source is incident on an object 'P'. If a dark coloured shadow of the object is cast on the screen, then which of the following could'?' be? a) A piece of glass b) An iron ball c) A wax coated paper d) A transparent plastic sheet 6) Which of these materials can cast a shadow? a) A clear glass b) clean cellophane paper c) Clear water d) A piece of wood

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