Home
Class 11
PHYSICS
One boy takes 2 min to raise a box to a ...

One boy takes 2 min to raise a box to a height of 1 m and another boy takes 3 min to do so. The energy of the two boys is

A

different

B

same

C

energy of the first is more

D

energy of the second is more

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|34 Videos
  • WORK, ENERGY AND POWER

    MTG GUIDE|Exercise NEET CAFE (TOPICWISE PRACTICE QUESTIONS) (COLLISIONS)|35 Videos
  • THERMODYNAMICS

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|26 Videos

Similar Questions

Explore conceptually related problems

One man takes 1 minute to raise a box to a height of 1 metre and another man takes 1/2 minute to do so. The energy of the two is

One coolie takes 1min to raise a box through a height of 2m . Another one takes 30s for the same job and does the same amount of work. Which one of the two has greater power and which one uses greater enegy?

One coolie takes 1 min to raise a box through a height 2 m . Another takes 30 s for the same job and does the same job and does the same amount of work. Which one of these two has a greater power and which one uses greaster energy ?

One filament takes 10min to heat a kettle and another takes 15 min. If connected in parallel they combindly take………min to heat the same kettle:

Two boys are playing on a ground. Both the boys are less than 10 years old. Age of the younger boy is equal to the cube root of the product of the age of the two boys. If we place the digit representing the age of the younger boy to the left of the digit representing the age of the elder boy, we get the age of father of the younger boy. Similarly, if we place the digit representing the age of the elder boy to the left of the digit representing the age of the younger boy and divided the figure by 2, we get the age of mother of the younger boy. The mother of the younger boy is younger to his father, by 3 years. Then, what is the age of the younger boy

A boy (mass of 40 kg) is standing at one end of a boat (mass of 60 kg) in still water. The length of the boat is 10 m and the boy takes 2s to reach at other end of boat moving with constant speed. Assuming no friction between the boat and the water. (i) The distance covered by the boat is 4 m (ii) The distance covered by the boy with respect to the ground is 6 m . (iii) The velocity of the boy with respect to the ground is lt 5 m//s (iv) The velocity of the boy is 3 m//s

MTG GUIDE-WORK, ENERGY AND POWER-CHECK YOUR NEET VITALS
  1. Match the Column I with Column II.

    Text Solution

    |

  2. A 1 kg block situated on a rough incline is connected to a spring of n...

    Text Solution

    |

  3. The kinetic energy of a body is increased by 56%. The momentum is incr...

    Text Solution

    |

  4. A body of mass 4 kg is moving with momentum of 8 kg m s^(-1). A force ...

    Text Solution

    |

  5. A uniform chain of length L and mass M is lying on a smooth table and ...

    Text Solution

    |

  6. The system is released from rest with the spring initially stretched 7...

    Text Solution

    |

  7. A car manufacturer claims that his car can be accelerated from rest to...

    Text Solution

    |

  8. A gun of mass 20 kg has bullet of mass 0.1 kg in it. The gun is free t...

    Text Solution

    |

  9. A body of mass m, moving with a uniform velocity of 30 m s^(-1) collid...

    Text Solution

    |

  10. A block of mass 10 kg is moving in x-direction with a constant speed o...

    Text Solution

    |

  11. Two spheres A and B of masses m1 and m2 respectively collide. A is at ...

    Text Solution

    |

  12. A girl in a swing is 2.5 m above ground at the maximum height and at 1...

    Text Solution

    |

  13. An open watertight railway wagon of mass 5 xx 10^3 kg is moving with a...

    Text Solution

    |

  14. A truck accelerates from speed v to 2v. Work done during this is

    Text Solution

    |

  15. One boy takes 2 min to raise a box to a height of 1 m and another boy ...

    Text Solution

    |

  16. When a long spring is stretched by 2 cm, its potential energy is U. If...

    Text Solution

    |

  17. The displacement of a body of mass 2 kg varies with time t as S = t^2 ...

    Text Solution

    |

  18. The work done by external agent in stretching a spring of force consta...

    Text Solution

    |

  19. One end of an unstretched vertical spring is attached to the ceiling a...

    Text Solution

    |

  20. Concrete blocks of masses mA and mB are balanced on two identical vert...

    Text Solution

    |