MHT CET 2023 9th May Evening Shift | MHT CET Year Wise Previous Years Questions

A disc of radius $$R$$ and thickness $$\frac{R}{6}$$ has moment of inertia I about an axis passing through its centre and perpendicular to its plane. Dise is melted and recast into a solid sphere. The moment of inertia of a sphere about its diameter is

$$\frac{\mathrm{I}}{5}$$

$$\frac{\mathrm{I}}{6}$$

$$\frac{\mathrm{I}}{32}$$

$$\frac{\mathrm{I}}{64}$$

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

-0

A charge '$$q$$' moves with velocity '$$v$$' through electric (E) as well as magnetic field (B). Then the force acting on it is

$$\mathrm{q}(\overrightarrow{\mathrm{v}} \times \overrightarrow{\mathrm{B}})$$

$$\mathrm{q}(\overrightarrow{\mathrm{B}} \times \overrightarrow{\mathrm{v}})$$

$$\mathrm{q}(\overrightarrow{\mathrm{E}} \times \overrightarrow{\mathrm{v}})$$

$$\overrightarrow{\mathrm{qE}}+\mathrm{q}(\overrightarrow{\mathrm{v}} \times \overrightarrow{\mathrm{B}})$$

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

-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)

$$\frac{5}{4}$$

$$\frac{4}{5}$$

$$\frac{5}{2}$$

$$\frac{2}{5}$$

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