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The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.
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Ans1 . laws of reflection :
☆The fiest law of reflection states that the incident ray the reflected ray and the normal to the surface of the mirror all lie in the same plane .
☆ The second law of reflection states that the angle of reflectuon is equal to the angle of incidence both angles are measured with respect to the normal to the mirror .
Ans2 . Silver is the best reflectors of light .
Ans3 . Petroleum is called as liquid gold because of its high value in the market .
Ans4.Exhaustible resource : Petrol , coal , natural gas etc .
Inexhaustible resource : sunlight , wind etc .
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