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The specific heat capacity of water is...

The specific heat capacity of water is

A

`4.2J kg^(-1^(@))C^(-1)`

B

`4.2J g^(-1^(@))C^(-1)`

C

`1 J g^(-1^(@))C^(-1)`

D

`1 J kg^(-1^(@))C^(-1)`

Text Solution

Verified by Experts

The specific heat capacity of water is `4.2 J g^(-1^(@))C^(-1)`
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Figure shown two adiabatic vessels, each containing a mass m of water at different temperature. The ends of a metal rod of length L, area of cross section. A and thermal conductivity K, are inserted in the water as shown in the figure. Find the time taken for the difference between the temperature in the vessels to become half of the original value. The specific heat capacity of water is s. Neglect the heat capacity of the rod and the container and any loss of heat top the atmosphere.

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Knowledge Check

  • Equal volumes of water and alcohol when put in similar calorimeters take 100 sec and 74 sec respecively to cool from 50^(@)C to 40^(@)C . The thermal capacity of each calorimeter in numerically equal to the volume of either liquid. The specific gravity of alcohol is 0.8 if the specific heat capacity of water is 1 cal//gm , the specific heat capcity of alcohol will

    A
    `0.6 cal//gm-^(@)C`
    B
    `0.8 cal//gm-^(@)C`
    C
    `1.6 cal//gm-^(@)C`
    D
    `1.8 cal//gm-^(@)C`

  • The specific heat capacity is

    A
    constant for each material
    B
    depends on the conditions under which it is measured
    C
    same for a material at all conditions
    D
    the statement 'a', 'b' and 'c' are correct

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