1
MHT CET 2021 21th September Morning Shift
+1
-0

Which one of the following equations specifies an isobaric process? $$[Q=$$ heat supplied $$\Delta P, \Delta V$$ and $$\Delta T$$ are change in pressure, volume and temperature respectively]

A
$$Q=0$$
B
$$\Delta \mathrm{T}=0$$
C
$$\Delta \mathrm{V}=0$$
D
$$\Delta \mathrm{P}=0$$
2
MHT CET 2021 20th September Evening Shift
+1
-0

A perfect gas of volume 10 litre n compressed isothermally to a volume of 1 litre. The rms speed of the molecules will

A
decrease 5 times
B
remain unchanged
C
increase 5 times
D
increase 10 times
3
MHT CET 2021 20th September Evening Shift
+1
-0

The relation obeyed by a perfect gas during an adiabatic process is $$\mathrm{PV}^{3 / 2}$$. The initial temperature of the gas is '$$\mathrm{T}$$'. When the gas is compressed to half of its Initial volume, the final temperature of the gas is

A
$$2 \sqrt{2} \mathrm{~T}$$
B
$$4 \mathrm{~T}$$
C
$$\sqrt{2} \mathrm{~T}$$
D
$$2 \mathrm{~T}$$
4
MHT CET 2021 20th September Evening Shift
+1
-0

A black rectangular surface of area '$$\mathrm{A}$$' emits energy '$$\mathrm{E}$$' per second at $$27^{\circ} \mathrm{C}$$. If length and breadth is reduced to $$(1 / 3)^{\text {rd }}$$ of its initial value and temperature is raised to $$327^{\circ} \mathrm{C}$$ then energy emitted per second becomes

A
$$\frac{20 \mathrm{E}}{9}$$
B
$$\frac{8 \mathrm{E}}{9}$$
C
$$\frac{16 \mathrm{E}}{9}$$
D
$$\frac{4 \mathrm{E}}{9}$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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