Question

A certain gas is taken to the five states 1, 2, 3, 4 and 5 represented by dots in PV in graph. The plotted curves are isotherms. Order of the most probable speed v_mpof the molecules at these five states is :

• A. V**_{mp at 3}>V_{mp at 1}= V_{mp at 2}>V_{mp at 4}** =V**_{mp at 5}**
• B. V**_{mp at 1}** >V**_{mp at 2}** =V**_{mp at 3}** >V**_{mp at 4}** >V**_{mp at 5}**
• C. V**_{mp at 3}>V_{mp at 2}** = V**_{mp at 4}** >V**_{mp at 1}** >V**_{mp at 5}**
• D. V**_{mp at 3}** >V**_{mp at 2}** >V**_{mp at 4}** >V**_{mp at 1}** >V**_{mp at 5}**

Answer 1

Answer: (A)

V**_{mp at 3}>V_{mp at 1}= V_{mp at 2}>V_{mp at 4}** =V**_{mp at 5}**

Answer 2

V_mp and T₃ > T₁ = T₂>T₄ =T₅

(1 and 2 are on same isotherm also 4 and 5 are on same isotherm)