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Work, Energy and Power PYQs - Last 10 Years

MHT CET / Physics / Mechanics / 32 recent questions

PhysicsMechanics2017-2026

Practice 32 MHT CET Physics questions from Work, Energy and Power. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Physics / Mechanics
2019-2026
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32
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2017-2026

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Last 10 Years Work, Energy and Power Questions

Showing 32 of 32 filtered questions.

1Work Energy And Power
The spring is initially in unstretched condition. It is first stretched by a length '$x$' and the work done is $W_1$. Then again it is stretched by further length '$x$' when the work done is $W_2$. The value of $W_2$ is given by
MCQ+1 / -02026
2Work Energy And Power
A block of mass 'm' moving on a frictionless horizontal surface collides with a spring of spring constant 'K' and compresses it through a distance 'x'. The maximum momentum of the block after collision is
MCQ+1 / -02026
3Work Energy And Power
A body of mass 1kg begins to move under the action of a time dependent force $\vec{F} = (t\hat{i} + 3t^2\hat{j})\ \text{N}$ where $\hat{i}$ and $\hat{j}$ are the unit vectors along x and y axis. The power developed by the above force at tim...
MCQ+1 / -02026
4Work Energy And Power
A particle of mass $m$ is moving in a circular path of constant radius $r$ such that its centripetal acceleration $a_c$ is varying with time $t$ as, $a_c = k^2 r t^2$. The power delivered to the particle by the forces acting on it is ($K$ =...
MCQ+1 / -02026
5Work Energy And Power
A constant force $\vec{F}=3 \hat{i}-2 \hat{j}-\hat{k}$ newton has a displacement $\vec{r}=2 \hat{i}-3 \hat{j}-3 \hat{k}$ metre in 2 second. The work done and the power are respectively
MCQ+1 / -02025
6Work Energy And Power
A particle is displaced from point $\mathrm{P}(3 \mathrm{~m}, 4 \mathrm{~m}, 5 \mathrm{~m})$ to a point $\mathrm{Q}(2 \mathrm{~m}, 3 \mathrm{~m}, 4 \mathrm{~m})$ under a constant force $\overrightarrow{\mathrm{F}}=(3 \hat{\mathrm{i}}+4 \hat...
MCQ+1 / -02025
7Work Energy And Power
A body of mass 1 kg begins to move under the action of a time dependent force $\overrightarrow{\mathrm{F}}=\left(\hat{\mathrm{t}}+2 t^2 \hat{\mathrm{j}}\right) \mathrm{N}$, where $\hat{i}$ and $\hat{j}$ are unit vectors along $x$ and $y$ ax...
MCQ+1 / -02025
8Work Energy And Power
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 ,...
MCQ+1 / -02025
9Work Energy And Power
A stone is projected with kinetic energy E, making an angle $\theta$ with the horizontal. When it reaches a highest point, its kinetic energy is
MCQ+1 / -02025
10Work Energy And Power
The potential energy of a long spring when it is stretched by 3 cm is ' $U$ '. If the spring is stretched by 9 cm , potential energy stored in it will be
MCQ+1 / -02024
11Work Energy And Power
A carpet of mass ' $M$ ' made of a material is rolled along its length in the form of a cylinder of radius ' $R$ ' and kept above the rough floor. If the carpet is unrolled without sliding to a radius ' $R / 2$ '. The change in potential en...
MCQ+1 / -02024
12Work Energy And Power
A ball ' $A$ ' is projected vertically upwards with certain initial speed. Another ball 'B' of same mass is projected at an angle of $30^{\circ}$ with vertical with the same initial speed. At the highest point, the ratio of potential energy...
MCQ+1 / -02024
13Work Energy And Power
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)
MCQ+1 / -02024
14Work Energy And Power
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
MCQ+1 / -02024
15Work Energy And Power
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
MCQ+1 / -02024
16Work Energy And Power
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
MCQ+1 / -02024
17Work Energy And Power
For a particle moving in vertical circle, the total energy at different positions along the path [The motion is under gravity]
MCQ+1 / -02024
18Work Energy And Power
A lead bullet moving with velocity ' V ' strikes a wall and stops. If $75 \%$ of its energy is converted into heat, then the increase in temperature is ( $\mathrm{s}=$ specific heat of lead, $\mathrm{J}=$ mechanical equivalent of heat)
MCQ+1 / -02024
19Work Energy And Power
If the momentum of a body of mass ' $m$ ' is increased by $20 \%$ then its kinetic energy increases by
MCQ+1 / -02024
20Work Energy And Power
A stone is projected vertically upwards with speed '\(v\)'. Another stone of same mass is projected at an angle of \(60^{\circ}\) with the vertical with the same speed '\(v\)'. The ratio of their potential energies at the highest points of ...
MCQ+1 / -02023
21Work Energy And Power
Using variation of force and time given below, final velocity of a particle of mass \(2 \mathrm{~kg}\) moving with initial velocity \(6 \mathrm{~m} / \mathrm{s}\) will be
MCQ+1 / -02023
22Work Energy And Power
If a lighter body of mass '\(\mathrm{M}_1\)' and velocity '\(\mathrm{V}_1\)' and a heavy body (mass \(M_2\) and velocity \(V_2\) ) have the same kinetic energy then
MCQ+1 / -02023
23Work Energy And Power
A ball of mass '\(\mathrm{m}\)' is dropped from a height '\(\mathrm{s}\)' on a horizontal platform fixed at the top of a vertical spring. The platform is depressed by a distance '\(h\)'. The spring constant is ( \(\mathrm{g}=\) acceleration...
MCQ+1 / -02023
24Work Energy And Power
A stone is projected vertically upwards with velocity 'V. Another stone of same mass is projected at an angle fo \(60^{\circ}\) with the vertical with the same speed \((\mathrm{V})\). The ratio of their potential energies at the highest poi...
MCQ+1 / -02021
25Work Energy And Power
The kinetic energy of a light body and a heavy body is same. Which one of them has greater momentum?
MCQ+1 / -02021
26Work Energy And Power
A bob of a simple pendulum of mass 'm' is displaced through 90\(^\circ\) from mean position and released. When the bob is at lowest position, the tension in the string is
MCQ+1 / -02021
27Work Energy And Power
A car of mass '\(m\)' moving with velocity '\(u\)' on a straight road in a straight line, doubles its velocity in time t. The power delivered by the engine of a car for doubling the velocity is
MCQ+1 / -02021
28Work Energy And Power
A sphere of mass 25 gram is placed on a vertical spring. It is compressed by \(0.2 \mathrm{~m}\) using a force \(5 \mathrm{~N}\). When the spring is released, the sphere will reach a height of $$\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^...
MCQ+1 / -02021
29Work Energy And Power
Three bodies P, Q and R have masses 'm' kg, '2m' kg and '3m' kg respectively. If all the bodies have equal kinetic energy, then greater momentum will be for body/bodies.
MCQ+1 / -02021
30Work Energy And Power
A vehicle of mass \(m\) is moving with momentum \(p\) on a rough horizontal road. The coefficient of friction between the tyres and the horizontal road is \(\mu\). The stopping distance is (\(g=\) acceleration due to gravity)
MCQ+1 / -02020
31Work Energy And Power
If the radius of the circular path and frequency of revolution of a particle of mass $m$ are doubled, then the change in its kinetic energy will be $\left(E_i\right.$ and $E_1$ are the initial and final kinetic energies of the particle resp...
MCQ+1 / -02019
32Work Energy And Power
A force $(F)=-5 \hat{\mathbf{i}}-7 \hat{\mathbf{j}}+3 \hat{\mathbf{k}}$ acting on a particle causes a displacement $(s)=3 \hat{\mathbf{i}}-2 \hat{\mathbf{j}}+a \hat{\mathbf{k}}$ in its own direction. If the work done is 14 J , then the valu...
MCQ+1 / -02019