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21. Three spheres have radii in the ratio 1:2:3. Same amount of heat is supplied to them. Find theratio of their specific heats such that the same rise of temperature takes place in them. Rates ofdensities of materials is 1 :2:3.1) 1296:81:163) 81 16: 12962) 16:81 12964) 1296 : 16:81tor nquiualent in

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