11.Thermodynamics
medium

નીચે આપેલી ચક્રીય પ્રક્રિયામાં કેટલી ઉષ્માનું શોષણ થશે?

A

$10^7 \;\pi J $

B

$10^4 \;\pi J $

C

$10^2\;\pi J$

D

$ {10^{ - 3}}\,\pi J $

(AIIMS-1995)

Solution

(c) In a cyclic, $\Delta  U = 0 $

From FLOT, $\Delta Q =  \Delta  U +  \Delta  W = 0 +  \Delta  W = $ Area of closed curve

==> $\Delta$ Q =  $\pi r^2$ = $\pi {\left( {\frac{{20}}{2}} \right)^2}k{P_a} \times litre$ $ = 100\,\pi \times {10^3} \times {10^{ – 3}}J = 100\,\pi J$

Standard 11
Physics

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