If water absorbs 4000 joule heat to increase the temperature of 1 {\kg} water through 1^{\circ} {\C} then the specific heat capacity of water is :

Correct Answer is : 4Jg−1∘C−1

4 {\Jkg}^{-1}{ }^{\circ} {\C}^{-1}

400 {\Jg}^{-1}{ }^{\circ} {\C}^{-1}

4 {\Jg}^{-1}{ }^{\circ} {\C}^{-1}

4.2 {\Jg}^{-1}{ }^{\circ} {\C}^{-1}

ICSE Class 10 Physics 2022 Solved Paper - Question 7

Section-A

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Question : 7 of 45

Marks: +1, -0

If water absorbs 4000 joule heat to increase the temperature of

1 {\kg}

water through

1^{∘} {\C}

then the specific heat capacity of water is :

Solution:

(c)

4 {\Jg}^{-1}{ }^{∘} {\C}^{-1}

Explanation :

θ=4000 {\J}, m=1 {\kg}=

1000 {\g}

∆ {\T}=1^{∘} {\C}

\; ∵ \;\; θ=m c ∆ {\T}

\; ∴ \;\; c=\;{θ}/{m ∆ {\T}}=\;{4000}/{1000 × 1}

\;=4 {\Jg}^{-1}{ }^{∘} {\C}^{-1}

\;

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