The internal energy of air in 4 m 4 m 3 m sized room at 1 atmospheric pressure will be _______ . (Consider air as diatomic molecule) [2025]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
The internal energy of air in 4 m $\times$ 4 m $\times$ 3 m sized room at 1 atmospheric pressure will be _______ $\times 10^{6} J$ . (Consider air as diatomic molecule) [2025]

Ans.
(12)

$U = n C_{v} T = n \times \frac{5 R}{2} T$

$\Rightarrow U = \frac{5}{2} (n R T) = \frac{5}{2} P V$

$\Rightarrow U = \frac{5}{2} \times 10^{5} \times 4 \times 4 \times 3 = 12 \times 10^{6} J$

Want Us to Email you About Special Offers & Updates?