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Latent Heat

What is the u...

Question

What is the unit of the specific latent heat of fusion?

$J k g^{- 1}$

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$J k g$

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$J k g K^{- 1}$

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$J k g K$

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Solution

The correct option is A
$J k g^{- 1}$

The specific latent heat of a phase is the quantity of heat energy absorbed by the unit mass of the substance for the change in its phase at a constant temperature.
$L = \frac{Q}{m}$
Unit of heat is Joule and
Unit of mass is kg
$∴$ Unit of latent heat will $J k g^{- 1}$ .

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Similar questions

3 k g

- 7^{\circ} C

40^{\circ} C

334.7 J / k g K

2108 J / k g K

4186 J / k g K

4.5 kg

0.210 kJ/kg K

4.20 kJ/kg K

The S.I. unit of specific latent heat is :

(a) cal $g^{- 1}$

(b) cal $g^{- 1} K^{- 1}$

(d) J $k g^{- 1} K^{- 1}$

1 kg

- 10^{\circ} C

100^{\circ} C

= 2100 J {k g}^{- 1} K^{- 1}

= 3.36 \times 10^{5} J {k g}^{- 1}

= 4200 J {k g}^{- 1} K^{- 1}

= 2.25 \times 10^{6} J {k g}^{- 1}

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