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NATime40 MSHORT ANSWER TYPE QUESTIONS (I MARK)VERY SHORT1. Define source of light.Ans.Are stars natural sources of light?Ans.2. Is candle the man-made source of light?Ans.Why opaque materials do not allow light to pass through them?Ans.5. Which gives us clear images?Ans.6Are earth and moon opaque objects?Ans.How many are kinds of shadows? Name them.Ans.8. When does a lunar eclipse occur?Ans.9. What is the function of periscope?Ans.10. What happens to our shadows, when we walk in the sunlight? |
Answer» <p>1. light is form of light which produces sensation2.yes star is natural source of light3.yes ,candel is man made4.because of reflection5.mirror,smooth polished area.6.yes both are opaque.7.3 type8.when sun ,earth moon are very close then lunar eclipse occur9.periscope used in submarine.</p> | |