MCQ
The work done in lifting a box on a platform depends on which of the following:
  • A
    How fast is it lifted
  • B
    On the power of man
  • The height to which it is raised
  • D
    On the area of the box.

Answer

Correct option: C.
The height to which it is raised
C

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Real gases show mark able deviation from that of ideal gas behavior at:
A body is projected horizontally with a velocity of $4\ ms^{-1}$. The velocity of the body after $0.7s$ is nearly $($take $g = 10\ ms^{-2}$)
A body is moving forwards and backward. Change in frequency observed of source is 2%. What is velocity of the body? (Speed of sound is 300 m/s)
Two vibrating tuning forks produce progressive waves given by ${Y_1} = 4\sin 500\pi t$ and ${Y_2} = 2\sin 506\pi t.$ Number of beats produced per minute is
A ball is projected from the ground with a speed $15 \,ms ^{-1}$ at an angle $\theta$ with horizontal so that its range and maximum height are equal, then $tan\,\theta$ will be equal to 
Two vessels separately contain two ideal gases $A$ and $B$ at the same temperature, the pressure of $A$ being twice that of $B.$ Under such conditions, the density of $A$ is found to be $1.5$ times the density of $B.$ The ratio of molecular weight of $A$ and $B$ is
There is a black spot on a body. If the body is heated and carried in dark room then it glows more. This can be explained on the basis of
A thief is running away on a straight road in jeep moving with a speed of $9$$m{s^{ - 1}}.$ A police man chases him on a motor cycle moving at a speed of $10$$m{s^{ - 1}}.$ If the instantaneous separation of the jeep from the motorcycle is $100\, m$, how long will it take for the police to catch the thief.......$s$
Recently, the phenomenon of superconductivity has been observed at $95\, K$. This temperature is nearly equal to ......... $^oF$
A bob of mass $m$, suspended by a string of length $I_1$, is given a minimum velocity required to complete a full circle in the vertical plane, At the highest point, it collides elastically with another bob of mass $m$ suspended by a string of length $I_2$, which is initially at rest. Both the strings are mass-less and inextensible. If the second bob, after collision acquires the minimum speed required to complete a full circle in the vertical plane, the ratio $\frac{I_1}{I_2}$ is :