Home
Class 11
PHYSICS
A body is initially at rest. It undergoe...

A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it at time t is proportional to

A

`t^(1//2)`

B

t

C

`t^(3//2)`

D

`t^2`

Text Solution

Verified by Experts

The correct Answer is:
B
`P = Fv = mg (at) = ma^2 t implies P prop t`
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY POWER AND COLLISION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Elastic and Inelastic Collision)|44 Videos

  • WORK, ENERGY POWER AND COLLISION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Perfectly Inelastic Collision)|9 Videos

  • WORK, ENERGY POWER AND COLLISION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Conservation of Energy and Momentum)|64 Videos

  • WAVES AND SOUND

    ERRORLESS|Exercise ASSERTION & REASON |25 Videos

Similar Questions

Explore conceptually related problems

Projectile motion is a two dimensional motion with constant acceleration. Is this statement true or false?

A body starts from rest and acquires velocity V in time T . The instantaneous power delivered to the body in time 't' proportional to

For the one dimensional motion, described by x=t-sint

A constant power delivering machine has towed a box, which was initially at rest, along a horizontal straight line. The distance moved by the box in time't is proportional to :

A body is being moved from rest along a straight line by a machine delivering constant power. The distance covered by body in time t is proportional to

A particle starting from rest undergoes a rectilinear motion with acceleration a. The variation of a with time t is shown below. The maximum velocity attained by the particle during its motion is

A body at rest is moved in a stright line by supplying constant power to it . Distance moved by the body in time t is found to be proportional to t^(n) Value of n is .

ERRORLESS-WORK, ENERGY POWER AND COLLISION-NCERT BASED QUESTIONS (Power)
  1. A body is initially at rest. It undergoes one dimensional motion with ...

    Text Solution

    |

  2. A car of mass m starts from rest and accelerates so that the instantan...

    Text Solution

    |

  3. The power of pump, which can pump 200 kg of water to height of 200 m i...

    Text Solution

    |

  4. A force 2hati+3hatj+4hatk N acts on a body for 4 sec, produces a displ...

    Text Solution

    |

  5. A particle is acted upon by a constant power. Then, which of the follo...

    Text Solution

    |

  6. Water falls from a height of 60 m at the rate 15 kg//s to operate a tu...

    Text Solution

    |

  7. The power of a water pump is 2 kW. If g = 10 m//s^2, the amount of wat...

    Text Solution

    |

  8. A bread gives a boy of mass 40 kg an energy of 21 kJ. If the efficienc...

    Text Solution

    |

  9. A 10 H.P. motor pumps out water from a well of depth 20 m and fills a ...

    Text Solution

    |

  10. A truck of mass 30,000 kg moves up an inclined plane of slope 1 in 100...

    Text Solution

    |

  11. A 60 kg man runs up a staircase in 12 seconds while 50 kg man runs up ...

    Text Solution

    |

  12. An engine pumps up 100 kg water through a height of 10 m in 5 s. If ef...

    Text Solution

    |

  13. From an automatic gun a man fires 360 bullet per minute with a speed o...

    Text Solution

    |

  14. If the heart pushes 1 cc of blood in one second under pressure 20000 N...

    Text Solution

    |

  15. An engine pumps water through a hose pipe. Water passes through the pi...

    Text Solution

    |

  16. A body of mass M is moving with a uniform speed of 10m/ s on frictionl...

    Text Solution

    |

  17. A body is moving unidirectionally under the influence of a source of c...

    Text Solution

    |

  18. A particle of mass m is moving in a circular path of constant radius r...

    Text Solution

    |