1
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 4 English

A
0.5 A
B
0.2 A
C
0.1 A
D
0.25 A
2
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

A charge Q is placed at the centre of a cube of sides a. The total flux of electric field through the six surfaces of the cube is

A
$$ \frac{6 \mathrm{Qa}^2}{\epsilon_0} $$
B
$$ \frac{\mathrm{Q} \mathrm{a}^2}{6 \epsilon_0} $$
C
$$ \mathrm{Q} / \epsilon_0 $$
D
$$ \mathrm{Q} \mathrm{a}^2 / \epsilon_0 $$
3
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The elastic potential energy of a strained body is

A
stress $$\times$$ strain
B
stress / strain
C
stress $$\times$$ strain / volume
D
$$\frac{1}{2} \times$$ stress $$\times$$ strain $$\times$$ volume
4
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Which of the following statement(s) is/are truc in respect of nuclear binding energy ?

(i) The mass energy of a nucleus is larger than the total mass energy of its individual protons and neutrons.

(ii) If a nucleus could be separated into its nucleons, an energy equal to the binding energy would have to be transferred to the particles during the separating process.

(iii) The binding energy is a measure of how well the nucleons in a nucleus are held together.

(iv) The nuclear fission is somehow related to acquiring higher binding energy.

A
Statements (i), (ii) and (iii) are true
B
Statements (ii), (iii) and (iv) are true
C
Statements (ii) and (iii) are true
D
All the four statements are true
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