1
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A parallel combination of two capacitors of capacities '$$2 ~\mathrm{C}$$' and '$$\mathrm{C}$$' is connected across $$5 \mathrm{~V}$$ battery. When they are fully charged, the charges and energies stored in them be '$$\mathrm{Q}_1$$', '$$Q_2$$' and '$$E_1$$', '$$E_2$$' respectively. Then $$\frac{E_1-E_2}{Q_1-Q_2}$$ in $$\mathrm{J} / \mathrm{C}$$ is (capacity is in Farad, charge in Coulomb and energy in J)

A
$$\frac{5}{4}$$
B
$$\frac{4}{5}$$
C
$$\frac{5}{2}$$
D
$$\frac{2}{5}$$
2
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following statements $$\mathrm{A}$$ and $$\mathrm{B}$$. Identify the correct choice in the given answers.

A. In an inelastic collision, there is no loss in kinetic energy during collision.

B. During a collision, the linear momentum of the entire system of particles is conserved if there is no external force acting on the system.

A
Both $$\mathrm{A}$$ and $$\mathrm{B}$$ are wrong.
B
Both A and B are correct.
C
$$\mathrm{A}$$ is wrong and $$\mathrm{B}$$ is correct.
D
A is correct and B is wrong.
3
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The charges $$2 \mathrm{q},-\mathrm{q},-\mathrm{q}$$ are located at the vertices of an equilateral triangle. At the circumcentre of the triangle

A
the field is zero but potential is not zero.
B
the field is non-zero but the potential is zero.
C
both, field and potential are zero.
D
both. field and potential are non-zero.
4
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic field at a point $$\mathrm{P}$$ situated at perpendicular distance '$$R$$' from a long straight wire carrying a current of $$12 \mathrm{~A}$$ is $$3 \times 10^{-5} \mathrm{~Wb} / \mathrm{m}^2$$. The value of '$$\mathrm{R}$$' in $$\mathrm{mm}$$ is $$\left[\mu_0=4 \pi \times 10^{-7} \mathrm{~Wb} / \mathrm{Am}\right]$$

A
0.08
B
0.8
C
8
D
80
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