1
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
$$-\frac{1}{3}$$
2
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
$$\sqrt{\frac{\alpha}{m \beta^6}}$$
3
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
4
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

A $$2 \mathrm{~V}$$ cell is connected across the points $$\mathrm{A}$$ and $$\mathrm{B}$$ as shown in the figure. Assume that the resistance of each diode is zero in forward bias and infinity in reverse bias. The current supplied by the cell is

WB JEE 2024 Physics - Electronic Devices Question 1 English

A
0.5 A
B
0.2 A
C
0.1 A
D
0.25 A
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