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a metal scale gives correct reading at 25 degree celcius .if the reading of the length of a rod on that scale at 15 degree is 80cm,find the length of the rod at the temperature |
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Answer» tion:The NEW length of the steel scale =L(1+α s )THUS the scale readings have shrunk by a FACTOR of 1+α s .The new length of the copper rod =L(1+α c ).Thus the READING on the scale =L( 1+α s 1+α c ) |
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