Home
Class 11
PHYSICS
A wide hose pipe is held horizontally by...

A wide hose pipe is held horizontally by fireman.It delivers water through a nozale at one lirte per second. On increasing the pressure, this increass to two litres per second.The fireman has now to

A

push forward twice as hard

B

pulsh forward four times as hard

C

push backward four times as hard

D

push backward twice as hard

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SOLVD PAPERS 2017 NEET, AIIMS & JIPMER

    DC PANDEY|Exercise Solved paper 2018(NEET)|22 Videos
  • SOLVD PAPERS 2017 NEET, AIIMS & JIPMER

    DC PANDEY|Exercise Solved paper 2018(AIIMS)|28 Videos
  • SOLVD PAPERS 2017 NEET, AIIMS & JIPMER

    DC PANDEY|Exercise Solved Papers 2017(AIIMS)|26 Videos
  • SIMPLE HARMONIC MOTION

    DC PANDEY|Exercise Integer type questions|14 Videos
  • SOUND WAVES

    DC PANDEY|Exercise Exercise 19.7|4 Videos

Similar Questions

Explore conceptually related problems

From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1 hour.

Two wires are in unison. If the tension in one of the wires is increased by 2%, 5 beats are produced per second. The initial frequency of each wire is

Two wires are in unison. If the tension in one of the wires is increased by 2%, 5 beats are produced per second. The initial frequency of each wire is

Water is flowing through a horizontal pipe at the rate of 1/3 litre per second. Calculate the velocity of flow at a point where diameter is 3 cm.

From a tap of inner radius 0.75cm, water flows at the rate of 7m per second.Find the volume in litres of water delivered by the pipe in one hour.

Cylindrical pipe has inner diameter of 7cm and water flow through it at 192.5 litres per minutes.Find the rate of flow in km/hr .

There are two wires, each produces frequency of 500Hz. By what percentage tension in one wire is increased so that 5 beats per second can be heard?

A cylindrical pipe has inner diameter of 7cm and water flows through it at 19.5 litres per minute.ind the rate of flow in km/hr

A cylindrical pipe has inner diameter of 7cm and water flows through it at 192.5 litres per minute.Find the rate of flow in kilometres per hour.

DC PANDEY-SOLVD PAPERS 2017 NEET, AIIMS & JIPMER-Solved Papers 2017(JIPMER)
  1. A skier starts from rest at point A and slides donw the hill without t...

    Text Solution

    |

  2. A bicycle wheel rolls without slipping on a horizonatal floor.W hich o...

    Text Solution

    |

  3. The planets with radii R(1) and R(2) have densities p(1),p(2) respect...

    Text Solution

    |

  4. A wide hose pipe is held horizontally by fireman.It delivers water thr...

    Text Solution

    |

  5. The upper half of an inclined plane with inclination phi is perfectly ...

    Text Solution

    |

  6. The masses of 10 kg and 20 kg respectively are connected by a massless...

    Text Solution

    |

  7. A cylinder rolls up an inclined plane, reaches some height, and then r...

    Text Solution

    |

  8. A liquid is allowed to flow into a tube of truncated cone shape. Ident...

    Text Solution

    |

  9. Two soap bubbles coalesce.It noticed that, whilst joined together, the...

    Text Solution

    |

  10. The displacement of a particle along the x-axis is given by x = a sin^...

    Text Solution

    |

  11. Mercury boils at 367^(@)C. However, mercury thermometers are made such...

    Text Solution

    |

  12. Two identical glass spheres filled with air are connected by a thin ho...

    Text Solution

    |

  13. a graph between prssure P (along y-axis) and absolute temperature, T(a...

    Text Solution

    |

  14. A piece of blue glass heated to a high temperature and a piece of red ...

    Text Solution

    |

  15. A long block A of mass M is at rest on a smooth horizontal surface.A s...

    Text Solution

    |

  16. P-V plots for two gases during adiabatic processes are shown in the fi...

    Text Solution

    |

  17. A uniform rod of length L is free to rotate in a vertical plane about ...

    Text Solution

    |

  18. A Stick of length L and mass M lies on a fnctionless horizontal surfac...

    Text Solution

    |

  19. An iceberg of density 900kg//m^(3) is floating in water of density 100...

    Text Solution

    |

  20. A scientist says that the efficiency of his heat engine which operates...

    Text Solution

    |