MHT CET 2023 12th May Evening Shift | MHT CET Year Wise Previous Years Questions

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

A body is projected vertically upwards from earth's surface of radius '$$R$$' with velocity equal to $$\frac{1^{\text {rd }}}{3}$$ of escape velocity. The maximum height reached by the body is

$$\frac{R}{8}$$

$$\frac{\mathrm{R}}{6}$$

$$\frac{\mathrm{R}}{4}$$

$$\frac{\mathrm{R}}{9}$$

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

Which one of the following statements is WRONG regarding LED?

LEDs are energy efficient

LEDs have long time if properly manufactured.

Brightness of light emitted by LED cannot be controlled.

Colours produced by LED do not fade out.

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

A thin wire of length '$$L$$' and uniform linear mass density '$$m$$' is bent into a circular coil. The moment of inertia of this coil about tangential axis and in plane of the coil is

$$\frac{3 \mathrm{~mL}^2}{5 \pi^2}$$

$$\frac{3 \mathrm{~mL}^3}{8 \pi^2}$$

$$\frac{3 \mathrm{~mL}^3}{4 \pi^2}$$

$$\frac{3 \mathrm{~mL}^2}{7 \pi^2}$$

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

A black body radiates maximum energy at wavelength '$$\lambda$$' and its emissive power is '$$E$$'. Now due to a change in temperature of that body, it radiates maximum energy at wavelength $$\frac{\lambda}{3}$$. At that temperature emissive power is

$$16: 1$$

$$256: 1$$

$$81: 1$$

$$128: 1$$

PREVIOUS NEXT