Home
Class 12
PHYSICS
A capillary tube with very thin walls is...

A capillary tube with very thin walls is attached to the beam of a balance which is then equalized. The lower end of the capillry is brought in contact with the surface of water after which an additional load of `P = 0.135 gm` force is needed to regain equilibrium. If the radius of the capillary is `(lambda)/(10)cm` then find `lambda` The surface tension of water is `70 "dyne"//"cm"`. `(g = 9.8 m//s^(2))`

A

3.3 mm

B

6.6 mm

C

9.9 mm

D

1.1 mm

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SURFACE TENSION

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|72 Videos

  • STATIONARY WAVES

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos

  • WAVE MOTION

    TARGET PUBLICATION|Exercise MCQ 7.1|61 Videos

Similar Questions

Explore conceptually related problems

The surface tension of water in C.G.S units is 70 dyne / cm . Its S.I unit is

Water rises in a capillary tube of diameter 0.2xx10^(2)m upto a height of 1.5 cm. The surface tension of water is-

The force required to take away a flat circular plate of radius 2 cm from the surface of water, will be (the surface tension of water is 70 dyne/cm)

The force required to lift a circular flat plate of radius 5 cm on the surface of water is: (Surface tension of water is 75 dyne/cm):-

A capilary tube is kept vertical and made to touch the surface of the liquid of surface tension T . If the radius of the capillary tube is 'r' . Then the force on the wall of the capillary tube is

The force required to take away flat plate of radius 4cm from the surface of water is (surface tension os water =70"dyne"//cm)

A vertical capillary is brought in contact with the water surface. What amount of heat is liberated while the water rises along the capillary ? The wetting is assumed to be complete, the surface tension equals alpha .

When one end of the capillary is dipped in water, the height of water column is 'h' . The upward force of 105 dyne due to surface tension is balanced by the force due to the weight of water column . The inner circumference of the capillary is (Surface tension of water = 7 xx 10^(-2) N//m )

A capillary tube is kept vertical with the lower end dipped in water . The height of water raised in the capillary is 4 cm . If the length of the capillary tube is made 2 cm , then the angle made by the water surface in the capillary with the wall is

TARGET PUBLICATION-SURFACE TENSION -EVALUATION TEST
  1. A drop of Volume V is pressed between the two glass plates so as to sp...

    Text Solution

    |

  2. Assertion : When two soap bubbles having different radii are kept in c...

    Text Solution

    |

  3. A capillary tube with very thin walls is attached to the beam of a bal...

    Text Solution

    |

  4. One end of a glass capillary tube with a radius r is immersed into wat...

    Text Solution

    |

  5. A capillary tube of radius r is lowered into water whose surface tensi...

    Text Solution

    |

  6. A soap bubble of radius 'r' is blown up to form a bubble of radius 2r ...

    Text Solution

    |

  7. Assertion : Pressure in bubble ( r ) in the atmosphere of pressure...

    Text Solution

    |

  8. Assertion:- Rise of water level in capillary tube should be accounted ...

    Text Solution

    |

  9. In gravity free space. The liquid in a capillary tube will rise to

    Text Solution

    |

  10. Assertion : When there is a thin layer of water between two glass pla...

    Text Solution

    |

  11. A glass capillary tube of radius r is placed vertically touching the s...

    Text Solution

    |

  12. A capillary is dipped in water vessel kept on a freely falling lift, t...

    Text Solution

    |

  13. Two spherical soap bubbles of radii r1 and r2 in vacuume coalesce unde...

    Text Solution

    |

  14. Water rises to height of 5 cm in glass capillary tube . If the area of...

    Text Solution

    |

  15. Suppose that 64 raindrops combine into a single drop . Calculate the r...

    Text Solution

    |

  16. Two separate air bubbles (radii 0.002 cm and 0.004) formed of the same...

    Text Solution

    |

  17. Two soap bubbles A and B are kept in a closed chamber where the air is...

    Text Solution

    |

  18. Two parallel glass plates are held vertically at a small separation d ...

    Text Solution

    |

  19. A glass rod of diameter d1 =1.5 mm is inserted symmetrically into a ...

    Text Solution

    |

  20. When a loop of wire is dipped in a wetting liquid and is taken out. A ...

    Text Solution

    |