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Standard IX

Physics

Specific Heat Capacity

The specific ...

Question

The specific heat capacity of water is $4200 J / k g^{o} C$ . Calculate the heat capacity of $10 k g$ of water per $^{o} C$ :

42 J

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420 J

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42 k J

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420 k J

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Solution

The correct option is B $42 k J$
Heat capacity $c^{'}$ of a body is given by ,
$c^{'} = m c$ ,
where $m =$ mass of body ,
$c =$ specific heat capacity of body ,
given $c = 4200 J / k g^{o} C, m = 10 k g$ ,
therefore , $c^{'} = 10 \times 4200 = 42 k J$

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Similar questions

Q. How much heat energy is required to prepare a water bath of

20 k g

, when cold water at

10^{o} C

is heated to

40^{o} C

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4200 J / k g^{o} C

) :

Q. Calculate the quantity of heat required to convert

10 k g

of ice at

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to water at

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(Specific heat of water is

4200 J / k g^{o} C

, Latent heat of fusion of ice is

336 \times 10^{3} J / k g

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Calculate the heat energy required to convert completely $10 k g$ of water at $50 ° C$ into steam at $100 ° C$ , given that the specific heat capacity of water is $4200 J / (k g ° C)$ and the specific latent heat of vaporisation of water is $2260 k J / k g$ .

Q. Water falls from a height of 50 cm. Calculate the rise in temperature of water when it strikes the bottom. (

g = 10 m s^{- 2}

, sp. heat capacity of water

= 4200 J / k g^{o} C

)

1 k g

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630 k J

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4200 J / k g^{o} C

. Calculate the rise in temperature of

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The specific heat capacity of water is 4200 J/kgoC. Calculate the heat capacity of 10 kg of water per oC :

The correct option is B 42kJHeat capacity c′ of a body is given by , c′=mc ,where m= mass of body , c= specific heat capacity of body ,given c=4200 J/kgoC,m=10 kg ,therefore , c′=10×4200=42 kJ

The specific heat capacity of water is $4200 J / k g^{o} C$ . Calculate the heat capacity of $10 k g$ of water per $^{o} C$ :

The correct option is B $42 k J$
Heat capacity $c^{'}$ of a body is given by ,
$c^{'} = m c$ ,
where $m =$ mass of body ,
$c =$ specific heat capacity of body ,
given $c = 4200 J / k g^{o} C, m = 10 k g$ ,
therefore , $c^{'} = 10 \times 4200 = 42 k J$