Home
Class 11
PHYSICS
Assertion : A thin staindess steel needl...

Assertion : A thin staindess steel needle can by floating on a still water surface
Reason : Any object floats when the bayancey force balace the weight of the object

A

If both assertion and reason are true and the reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true statement but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
c
When a thin steel as held on surface of correct it stiles as upward force the to buryance does not supports its weight But when needed is and carefully on a still water surface then the in surface nation of water modulus s displaces as much remain of ware molecules it displaced as much another of water as in weigh This the is hencye force and surface tension it flor on value surface place option c is correct.
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST

    A2Z|Exercise General Kinematics|30 Videos

  • MOCK TEST

    A2Z|Exercise Motion With Constant Acceleration|15 Videos

  • KINETIC THEORY OF GASES AND THERMODYNAMICS

    A2Z|Exercise Chapter Test|29 Videos

  • MOTION IN TWO DIMENSION

    A2Z|Exercise Chapter Test|29 Videos

Similar Questions

Explore conceptually related problems

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: A thin stainless steel needle can lay floating on a still water surface. Reason: Any object floats when the buoyance force balances the weight of the object.

Statement-1: A thin stainless steel needle can lay floating on a still water surface. Statement-2: Any object floats when the buoyancy force balances the weight of the object.

Two needles are floating on the surface of water. A hot needle when touches wate 3r surface between the needles then they move

Whi does an object float or sink when placed on the surface of water?

Assertion: A needle placed carefully on the surface of water may float. Reason: A needle placed carefully on the surface of water may float due to the surface tension as upward forces due to surface tension balances the weight of the needle.

An object of weight W has a uniform rectangular cross section of a x2a and density of 0.25g//cm^(3) part of it is immersed in water and the rectangle is tilted by 45^(underset(-)(@)) while one of its corners is just at the water surface find the torque of the buoyancy force to the centre of mass of the object.

Surface tension is the property of a liquid by virtue of which the free space of the liquid at rest tends to have minimum area and as such it behaves as if covered with a stretched membrane. It is measured as the force acting an unit length of a line imagined to be drawn tangentially anywhere on the free surface of liquid at rest. It acts at right angles to this line on both sides and along the tangent to the liquid surface. When a razor bladed floats on water, then the force of surface tension acts on the circumference of the blade acting tangentially to the liquid surface : (a) True (b) False

A2Z-MOCK TEST-Motion With Constant Acceleration
  1. Assertion : A thin staindess steel needle can by floating on a still w...

    Text Solution

    |

  2. A candle of diameter d is floating on a liquid in a cylindrical contai...

    Text Solution

    |

  3. A given shaped glass tube having uniform cross-section is filled with ...

    Text Solution

    |

  4. When a ball is thrown up vertically with velocity v0, it reaches a max...

    Text Solution

    |

  5. A solid sphere is rolling on a frictionless surface, shown in figure w...

    Text Solution

    |

  6. A horizontal platform is rotating with uniform angular velcity around ...

    Text Solution

    |

  7. A ladder is leaned against a smooth wall and it is allowed to slip on ...

    Text Solution

    |

  8. A person is standing in an elevator. In which situation he finds his w...

    Text Solution

    |

  9. A particle having change q and m is projected with velocity vec v = 2 ...

    Text Solution

    |

  10. The velocity of a particle moving in the x-y plane is given by (dx)...

    Text Solution

    |

  11. A ball is droped from a high rise platform t = 0 starting from rest. A...

    Text Solution

    |

  12. Assertion: The error in the measurement of radius of sphere is 0.3%. T...

    Text Solution

    |

  13. Assertion: The isothermal curves intersect each other at a certain poi...

    Text Solution

    |

  14. Assertion: The velocity of a body at the bottom of an inclind plane of...

    Text Solution

    |

  15. Assertion: A body of mass 1 kg is making 1 rps in a circle of radius 1...

    Text Solution

    |

  16. Assertion: The change in air pressure effects the speed of sound. Re...

    Text Solution

    |