JEE Main 2025 Apr 2 Shift 2, Physics Q19: Specific Heat

JEE Main2025Apr 2, Shift 2Physics

Match List-I with List-II.

List-I		List-II
(A)	Heat capacity of body	(I)	J kg $^{- 1}$
(B)	Specific heat capacity of body	(II)	JK $^{- 1}$
(C)	Latent heat	(III)	J kg $^{- 1}$ K $^{- 1}$
(D)	Thermal conductivity	(IV)	Jm $^{- 1}$ K $^{- 1}$ s $^{- 1}$

Choose the correct answer from the options given below :

Solution

Read off the SI units from each definition:

Heat capacity $C = \frac{Δ Q}{Δ T}$ : units J K $^{- 1}$ $\Rightarrow$ A-(II).

Specific heat capacity $s = \frac{Δ Q}{m Δ T}$ : units J kg $^{- 1}$ K $^{- 1}$ $\Rightarrow$ B-(III).

Latent heat $L = \frac{Δ Q}{m}$ : units J kg $^{- 1}$ $\Rightarrow$ C-(I).

Thermal conductivity from $\frac{Δ Q}{Δ t} = \frac{K A Δ T}{L}$ : units J m $^{- 1}$ K $^{- 1}$ s $^{- 1}$ $\Rightarrow$ D-(IV).

$∴$ A-II, B-III, C-I, D-IV.

Concept behind this question

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