Mark the correct options:

(a) A system X is in thermal equilibrium with Y but not with Z. System Y and Z may be in thermal equilibrium with each other

(b) A system X is in thermal equilibrium with Y but not with Z. Systems Y and Z are not in thermal equilibrium with each other

(c) A system X is neither in thermal equilibrium with Y nor with Z. The systems Y and Z must be in thermal equilibrium with each other

(d) A system X is neither in thermal equilibrium with Y nor with Z. The system Y and Z may be in thermal equilibrium with each other

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Payal Gupta | Contributor-Level 10

8 months ago

This is a multiple choice answer as classified in NCERT Exemplar

(b), (d) T_x=T_y when x and y are in thermal equilibrium.

T_{x $\neq$}T_Zwhen x and z are not in thermal equilibrium.

T_{y $\neq$}T_Z

Hence y and z are not In thermal equilibrium.

Given T_{x $\neq$}T_y

And T_{x $\neq$}T_Z

We cannot say about equilibrium of y and z.

They may or m

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A glass full of hot milk is poured on the table. It begins to cool gradually. Which of the following is correct?

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Payal Gupta

This is a multiple choice answer as classified in NCERT Exemplar

(b), (c), (d) When the hot milk in the table is transferred to the surroundings by conduction, convection and radiation.

According to newton's law of cooling temperature of the milk falls of exponentially. Heat also will be transferred

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Physics NCERT Exemplar Solutions Class 11th Chapter Eleven 2025

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