1
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The speed distribution for a sample of $$\mathrm{N}$$ gas particles is shown below. $$\mathrm{P}(\mathrm{v})=0$$ for $$\mathrm{v}>2 \mathrm{v}_0$$. How many particles have speeds between $$1.2 \mathrm{v}_0$$ and $$1.8 \mathrm{v}_0$$ ?

WB JEE 2024 Physics - Heat and Thermodynamics Question 4 English

A
0.2 N
B
0.4 N
C
0.6 N
D
0.8 N
2
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The internal energy of a thermodynamic system is given by $$U=a s^{4 / 3} V^\alpha$$ where $$\mathrm{s}$$ is entropy, $$\mathrm{V}$$ is volume and '$$\mathrm{a}$$' and '$$\alpha$$' are constants. The value of $$\alpha$$ is

A
1
B
$$-$$1
C
$$\frac{1}{3}$$
D
$$-\frac{1}{3}$$
3
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

A particle of mass '$$m$$' moves in one dimension under the action of a conservative force whose potential energy has the form of $$U(x)=-\frac{\alpha x}{x^2+\beta^2}$$ where $$\alpha$$ and $$\beta$$ are dimensional parameters. The angular frequency of the oscillation is proportional to

A
$$\sqrt{\frac{\alpha^3}{\mathrm{~m} \beta^4}}$$
B
$$\sqrt{\frac{\alpha}{m \beta^4}}$$
C
$$\sqrt{\frac{\alpha}{\mathrm{m} \beta^3}}$$
D
$$\sqrt{\frac{\alpha}{m \beta^6}}$$
4
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Longitudinal waves cannot

A
have a unique wave length
B
have a unique wave velocity
C
transmit energy
D
be polarized
EXAM MAP