ST. THOMAS SCHOOL DHURWA, RANCHI SESSION-2021-22 PHYSICS CLASS-6 HOME WORK-1 (THIRD TERM) 1. Differentiate between the luminous and non- luminous bodies. Give two examples of each. [2] 2. What do we call a substance through which we cannot see light? Give an example of such a substance.[2] 3. What is a shadow ? Give reason for its formation.[2] 4. What is an eclipse? Name two types of eclipses.[2] 5. Why are shadows at noon shorter than in the morning or in the evening ?[2]
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The luminous objects are visible as they emit light on their own. The non-luminous objects are visible because of luminous objects. The sun and candle are two examples. The moon and planets are two examples.
A luminous body, such as the sun, another star, or a light bulb, is thus distinguished from an illuminated body, such as the moon and most of the other objects one sees. Illuminated bodies not only reflect light but sometimes also transmit it.
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