1
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of the work done, change in internal energy and heat absorbed when a diatomic gas expands at constant pressure is

A

$2: 3: 5$

B

$7: 5: 2$

C

$5: 3: 2$

D

$2: 5: 7$

2
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the temperature of a gas is increased from $127^{\circ} \mathrm{C}$ to $527^{\circ} \mathrm{C}$, then the rms speed of the gas molecules

A

increases by 4 times

B

becomes $\sqrt{2}$ times

C

becomes half

D

decreases by $\sqrt{2}$ times

3
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

An air column in a tube of length 50 cm , closed at one end is vibrating in its fifth harmonic. The phase difference between a particle at the open end and a particle at 42 cm from the open end is

A

$90^{\circ}$

B

$18^{\circ}$

C

$0^{\circ}$

D

$270^{\circ}$

4
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A metal rod of length 125 cm is clamped at its midpoint. If the speed of the sound in the metal is $5000 \mathrm{~ms}^{-1}$, then the fundamental frequency of the longitudinal vibrations of the rod is

A

2 kHz

B

20 kHz

C

0.2 kHz

D

200 kHz

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