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The temperature of two bodies measured b...

The temperature of two bodies measured by a thermomenter are `t_(1)=20^(@)C+-0.5^(@)C` and `t_(2)=50^(@)C+-0.5^(@)C`. The temperature difference and the error there in is

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The correct Answer is:
`(30^@ C pm 1^@ C)`
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The temperature of two bodies measured by a thermometer are t_1=20^@C pm 0.5^@C and t_2=50^@C pm 0.5^@C . Calculate the temperature difference and error there in .

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Two bodies of masses m_(1) and m_(2) and specific heat capacities S_(1) and S_(2) are connected by a rod of length l , cross-section area A , thermal conductivity K and negligible heat capacity. The whole system is thermally insulated. At time t=0 , the temperature of the first body is T_(1) and the temperature of the second body is T_(2)(T_(2)gtT_(1)) . Find the temperature difference between the two bodies at time t .

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