MHT CET 2025 19th April Morning Shift | Work, Energy and Power Question 2 | Physics

A stone of mass 1 kg tied to a light inextensible string of length $L=\frac{5}{3} m$ is rotating in a circular path of radius $L$ in a vertical plane. If the ratio of maximum tension in the string to the minimum tension in the string is 3 , the speed of the stone at the highest point of the circle is ( $\mathrm{g}=$ acceleration due to gravity)

$\sqrt{\mathrm{gL}}$

$\sqrt{2 \mathrm{gL}}$

$\sqrt{4 \mathrm{gL}}$

$\sqrt{8 \mathrm{gL}}$

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

-0

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

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

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

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