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In the Ingen Hauz's experiment the wax melts up to lengths 10 and 25 cm on two identical rods of different materials. The ratio of thermal conductivities of the two materials is:

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1 : 6.25

6.25 : 1

1 :2.5

1 : 2.5

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detailed solution

Correct option is A

K1:K2=L21:L22=100:625=1:6.25

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