Home
Class 12
PHYSICS
STATEMENT-1: When a sphere falls under g...

STATEMENT-1: When a sphere falls under gravity or moves up due to buoyancy forces in a fluid, its velocity becomes constant after some time.
STATEMENT-2: The force of visocosity is proportional to velocity.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation, for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is a False, Statement-2 is True.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS QUESTION 1

    D MUKHERJEE|Exercise Miscellaneous Questions-1 (Straight-Objective Type)|54 Videos

  • MISCELLANEOUS QUESTION 3

    D MUKHERJEE|Exercise Missellaneous Qns-3 (Pragraph)|18 Videos

Similar Questions

Explore conceptually related problems

Some question (Assertion-Reason type) are given below. Each question contains STATEMENT-1(Assertion) and STATEMENT-2(Reason) . Each question has 4 choices (A),(B),(C ) and (D) out of which ONLY ONE is correct. So select the correct choice : STATEMENT-1 A rain drop after falling through a certain distance attains a constant velocity. STATEMENT-2 The viscous force for spherical body is proportional to its speed. Hence after falling through a certain distance viscous drag and buoyant forces balance the gravitational force.

STATEMENT -1 : when an object moves towards a plane mirror with a certain velocity, its image will also move with same velocity. and STATEMENT - 2 : The distance from mirror to image is equal to distance of object from mirror.

Pseudo force with respect to a frame moving with constant velocity is zero. Is this statement true or false?

A body moves under a variable force. For the body a plot of velocity versus time is shown in figure. The correct statement is

The force of buoyancy exerted by the atmosphere on a balloon is B in the upward direction and remains constant. The force of air resistance on the balloon acts opposite to the direction of velocity and is proportional to it. The balloon carries a mass M and is found to fall down near the earth's surface with a constant velocity v. How uch mass hsould be removed from teh balloon so that it may rise with a constant velocity v?

A body falls freely under gravity and moves for n sec. Its velocity after n sec is "V" .The displacement of the body in the last 3 sec is

STATEMENT -1 : The force acting on a particle moving alongx -axis is F = - alpha ( x+ vt) , where alpha is a constant. and STATEMENT-2 : To anobserver moving along x-axis with constant velocity v, it represents SHM.

A small spherical ball falling under gravity in a viscous medium heat the medium due to viscous drage force. The rate of heating is proportional to r^(n) . ( r= radius of the sphere find ) n .

A particle moving with initial velocity 4m/s decelerate at a constant rate of 2m/s^(2) .Time after which its velocity becomes zero is ?

D MUKHERJEE-MISCELLANEOUS QUESTION 2-Missellaneous Qns-2 (Assertion)
  1. STATEMENT-1: When a charged particle eneters a magnetic field from out...

    Text Solution

    |

  2. STATEMENT-1: It is possible for a charged particle to move in a circul...

    Text Solution

    |

  3. STATEMENT-1: It is not possible for a charged particle to move in a ci...

    Text Solution

    |

  4. STATEMENT-1: When two sounds of slightly different frequecies are hear...

    Text Solution

    |

  5. STATEMENT-1: When a sphere falls under gravity or moves up due to buoy...

    Text Solution

    |

  6. STATEMENT-1: When two sounds of equal frequencies and slightly differe...

    Text Solution

    |

  7. STATEMENT-1: It is necessary to define two molar heat capacitor for a ...

    Text Solution

    |

  8. STATEMENT-1: The thermal conductivity of a rectangular slab of a mater...

    Text Solution

    |

  9. STATEMENT-1: In high-quality optical devices, such as camera, binocula...

    Text Solution

    |

  10. STATEMENT-1: Real images cannot be formed by reflection of light in a ...

    Text Solution

    |

  11. STATEMENT-1: When an electrical heater is switched on, the colour of t...

    Text Solution

    |

  12. STATEMENT-1: The specific heat capacity of a gas at constant pressure ...

    Text Solution

    |

  13. STATEMENT-1: When two identical strings stretcheed to slightly differe...

    Text Solution

    |

  14. STATEMENT-1: A single lens will have two different focal lengths if th...

    Text Solution

    |

  15. STATEMENT-1: When a closed organ pipe vibrates, the pressure of the ga...

    Text Solution

    |

  16. STATEMENT-1: When a coil is connected to a cell, no current flows thro...

    Text Solution

    |

  17. STATEMENT-1: In a moving train, a small potential different arises acr...

    Text Solution

    |

  18. STATEMENT-1: In an X-ray tube, the wavelengths of the characteristic X...

    Text Solution

    |

  19. STATEMENT-1: When alpha- and beta-particles pass through external elec...

    Text Solution

    |

  20. STATEMENT-1: The activity of a radioactive sample decreases linearly w...

    Text Solution

    |