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Please give me the correct answerx + y = 5 and xy=6 then the value of x^3 -y^3 = ______. |
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Answer» -step EXPLANATION:Since the image is formed on the screen, if is real. Real object and real image IMPLIES concave mirror.Applying m=ff−u or −2=ff−u (i)After shifting, −3=ff−(u+5) (ii)Here, CARE should be taken that distance of the object becomes u+5 not u−5: In a concave mirror the size of real image will increase only when the real object is brought CLOSER to the mirror. In doing so, its x-coordinate will increase.From (i) and (ii), we getf=−30cm or R=60cmhope this HELPS you |
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