WB JEE 2023 | Heat and Thermodynamics Question 13 | Physics

Two substances A and B of same mass are heated at constant rate. The variation of temperature $$\theta$$ of the substances with time t is shown in the figure. Choose the correct statement.

Specific heat of A is greater than that of B.

Specific heat of B is greater than that of A.

Both have same specific heat.

None of the above is true.

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

Certain amount of an ideal gas is taken from its initial state 1 to final state 4 through the paths 1 $$\to$$ 2 $$\to$$ 3 $$\to$$ 4 as shown in figure. AB, CD, EF are all isotherms. If v_p is the most probable speed of the molecules, then

WB JEE 2022 Physics - Heat and Thermodynamics Question 18 English

v_p at 3 = v_p at 4 > v_p at 2 > v_p at 1

v_p at 3 > v_p at 1 > v_p at 2 > v_p at 4

v_p at 3 > v_p at 2 > v_p at 4 > v_p at 1

v_p at 2 = v_p at 3 > v_p at 1 > v_p at 4

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

Consider a thermodynamic process where integral energy $$U = A{P^2}V$$ (A = constant). If the process is performed adiabatically, then

AP²(V + 1) = constant

(AP + 1)²V = constant

(AP + 1)V² = constant

$${V \over {{{(AP + 1)}^2}}}$$ = constant

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

One mole of a diatomic ideal gas undergoes a process shown in P-V diagram. The total heat given to the gas (ln 2 = 0.7) is

WB JEE 2022 Physics - Heat and Thermodynamics Question 16 English

2.5 P₀V₀

3.9 P₀V₀

1.1 P₀V₀

1.4 P₀V₀

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