MHT CET 2024 16th May Morning Shift | Work, Energy and Power Question 3 | Physics

The power $(\mathrm{P})$ is supplied to a rotating body having moment of inertia ' I ' and angular acceleration ' $\alpha$ '. Its instantaneous angular velocity ' $\omega$ ' is

$\mathrm{P}(\mathrm{I} \alpha)^{-1}$

$\mathrm{P}^{-1}(\mathrm{I} \alpha)^{-1}$

$P \alpha^{-1} \mathrm{I}$

$\mathrm{PIa}$

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

-0

A simple pendulum of length L has mass m and it oscillates freely with amplitude A. At extreme position, its potential energy is ( $\mathrm{g}=$ acceleration due to gravity)

$\frac{\mathrm{mgA}}{2 \mathrm{~L}}$

$\frac{\mathrm{mgA}^2}{\mathrm{~L}}$

$\frac{\mathrm{mgA}}{\mathrm{L}}$

$\frac{\mathrm{mgA}^2}{2 \mathrm{~L}}$

MHT CET 2024 15th May Evening Shift

MCQ (Single Correct Answer)

-0

If the work done in blowing a soap bubble of volume ' V ' is ' W ', then the work done in blowing a soap bubble of volume ' 2 V ' will be

2 W

$\mathrm{W} \sqrt{2}$

$\mathrm{W}(4)^{\frac{1}{3}}$

MHT CET 2024 15th May Morning Shift

MCQ (Single Correct Answer)

-0

A body of mass 1 kg starts from rest and moves with uniform acceleration. In 2 seconds, its velocity is $10 \mathrm{~m} / \mathrm{s}$. The power exerted on the body in one second is

20 W

25 W

50 W

100 W

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