Home
Class 11
PHYSICS
Which of the diagrams corectly shows the...

Which of the diagrams corectly shows the change in kinetic energy of an iron sphere falling freely in a lake having sufficient depth to impart it a terminal velocity ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B

First velocity ( and hence K.E) of the sphere increases at a faster rate then at a slower rate and then becomes constant when the sphere attains the terminal velocity as shown in option (b)
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    MODERN PUBLICATION|Exercise NCERT FILE (NCERT Exemplar Problems (Very Short Answer Type Questions))|12 Videos
  • WORK, ENERGY AND POWER

    MODERN PUBLICATION|Exercise NCERT FILE (NCERT Exemplar Problems (Short Answer Type Questions))|10 Videos
  • WORK, ENERGY AND POWER

    MODERN PUBLICATION|Exercise NCERT FILE (NCERT Additional Exercise)|7 Videos
  • WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

Which of the diagrams in figure, correctly shows the change in kinetic energy of an iron sphere falling freely in a lake having sufficient depth to impart if a terminal velocity ?

A raindrop falling from a height h above ground, attains a near terminal velocity when it has fallen through a height (3//4)h . Which of the diagrams shown in figure correctly shows the change in kinetic and potential energy of the drop during its fall up to the ground ?

Which would have a greater effect on the kinetic energy of an object : doubling the mass or doubling the velocity ?

An electron is either released from rest or projected with some initial velocity in a uniform electric field. Neglect any other force on the electron apart from electrostatic force. Which of the graphs shown in fig could possibly represent the change in kinetic energy of the electron during its course of motion? Explain the situation in each case.

A particle starts moving from rest the origin & moves along positive x- direction . Its rate of change of kinetic energy with time shown on y- axis veries with time t as shown in the graph. If position, velocity , acceleration & kinetic energy of the particle at any time t are x,v,a,& k respectively then which of the option (s) may be correct ?

A particle starts moving from the origin & moves along positive x-direction. Its rate of change of kinetic energy with time shown on y-axis varies with time t as shown in the graph. If position, velocity acceleration & kinetic energy of the particle at any time t are x,v a & k respectively then which of the option (s) may be correct ?

A solid sphere, of radius R acquires a terminal velocity v_(1) when falling (due to gravity) through a viscous fluid having a coefficient of viscosity h. The sphere is broken into 27 identical solid spheres. If each of these spheres acquires a terminal velocity, v_(2) , when falling through the same fluid, the ratio (v_(1)//v_(2)) equal 9/x . Find the value of x.

A solid sphere, of radius R acquires a terminal velocity v_1 when falling (due to gravity) through a viscous fluid having a coefficient of viscosity eta he sphere is broken into 27 identical solid spheres. If each of these spheres acquires a terminal velocity v _2 when falling through the same fluid, the ratio (v_1//v_2 ) equals:

Two discs A and B are mounted coaxially ona vertical axle. The discs have moments of inertia l and 2l respectively about the common axis. Disc A is imparted an initial angular velocity 2 omega using the centre potential energy of a spring compressed by a distance x_(1) . Disc B is imparted angular velocity omega by a spring having the same spring constant and compressed by a distance x_(2) . Both the disc rotate in the clockwise direction. The loss of kinetic energy the above process is -

MODERN PUBLICATION-WORK, ENERGY AND POWER -NCERT FILE (Exemplar Problems Objective Questions)
  1. A proton is kept at rest. A positively charged particle is released fr...

    Text Solution

    |

  2. A man squatting on the ground gets straight up and stand. The force of...

    Text Solution

    |

  3. A cyclist comes to a skidding stop in 10m. During this process, the fo...

    Text Solution

    |

  4. A body is falling freely under the action of gravity alone in vacuum. ...

    Text Solution

    |

  5. During inelastic collision between two bodies, which of the following ...

    Text Solution

    |

  6. Two inclined frictionless tracks, one gradual and the other steep meet...

    Text Solution

    |

  7. The potential energy function for a particle executing linear SHM is g...

    Text Solution

    |

  8. Two identical ball bearings in contact with each other and resting on ...

    Text Solution

    |

  9. A body of mass 0.5 kg travels in a straight line with velocity v= kx^(...

    Text Solution

    |

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

    Text Solution

    |

  11. Which of the diagrams shown in figure. Most closely shows the variatio...

    Text Solution

    |

  12. Which of the diagram shown in figures respresents variation of total m...

    Text Solution

    |

  13. A mass of 5kg is moving along a circular path or radius 1m. If the mas...

    Text Solution

    |

  14. A raindrop falling from a height h above ground, attains a near termin...

    Text Solution

    |

  15. In a shotput event an athlete throws the shotput of mass 10 kgwith an...

    Text Solution

    |

  16. Which of the diagrams corectly shows the change in kinetic energy of a...

    Text Solution

    |

  17. A cricket ball of mass 150g moving with a speed of 126km//h hits at th...

    Text Solution

    |

  18. A man of mass m , standing at the bottom of the staircase of height L ...

    Text Solution

    |

  19. A bullet of mass m fired at 30^(@) to the horizontal leaves the barrel...

    Text Solution

    |

  20. Two blocks M(1) and M(2) having equal mass are free to move on a horiz...

    Text Solution

    |