Home
Class 12
PHYSICS
A student measured the diameter of a wir...

A student measured the diameter of a wire using a screw gauge with least count 0.001 cm and listed the measurements. The correct measurement is -

Text Solution

Verified by Experts

The correct Answer is:
`sqrt((2KQ^(2))/(mR))`
COME : `K_(f)+U_(i)=K_(f)+U_(f)`

`0+0=1/2 mV^(2)-(KQ^(2))/(R)`
`V=sqrt((2KQ^(2))/(mR))`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A student measured the diameter of a wire using a screw gauge with least count 0.001cm and listed the measurement. The correct measurement is

In an experiment to measure the diameter of a wire using a screw gauge of resolution 0.001 cm, which of the following may correctly represent the measurement?

A student measued the diameter of a small steel ball using a screw gauge of least count 0.001 cm . The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero erroof -0.004 cm , the correct diameter of the ball is

The diameter of a wire is measured as 0.25 cm using a screw gauge of least count 0.005 cm. The percentage error is

The diameter of a thin wire can be measured by :

In searle's experiment, the diameter of the wire, as measured by a screw gauge of least count 0.001 cm is 0.500 cm. The length, measured by a scale of least count 0.1cm is 110.0cm. When a weight of 40N is suspended from the wire, its extension is measured to be 0.125 cm by a micrometer of least count 0.001 cm. Find the Young's modulus of the meterial of the wire from this data.

Thickness of a pencil measured by using a screw gauge (least count.001 cm) comes out to be 0.802 cm .The percentage error in the measurement is

The diameter of a wire is measured with a screw gauge having least count 0.01 mm . Out of the following the one which correctly expresses its diameter is

The resistivity of the material of a wire of length 1 and diameter d and resistance R is given by rho=(piRd^(2))/(4l) . The length of the wire I=100.0 cm is measured using a metre scale with a least count of I mm, the diameter d=0.22 cm is measured using an instrument with a least count of 0.01 cm and resistnce R=5.00 ohm is measured with an accuracy of 0.01 ohm. What is the percentage error? Suggest a method to reduced the percentage error.

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

ALLEN-BASIC MATHS-Exersice-04[A]
  1. In an experiment, the period of oscillation of a simple pendulum was o...

    Text Solution

    |

  2. The resistance R = V//i, where V = 100 +- 5 V and I = 10+- 0.2 A. What...

    Text Solution

    |

  3. The length, breadth and thickness of a strip are (10.0 pm 0.1) cm.(1.0...

    Text Solution

    |

  4. If error in measuring diameter of a circle is 4 %, the error in the ra...

    Text Solution

    |

  5. The external and internal diameters of a hollow cylinder are measured ...

    Text Solution

    |

  6. Percentage error in measuring the radius and mass of a solid sphere a...

    Text Solution

    |

  7. In a vernier callipers N divisions of vernier scale coincide with N-1 ...

    Text Solution

    |

  8. The length of cylinder is measured with a metre rod having least count...

    Text Solution

    |

  9. A vernier callipers has divisions on the vernier scale which coincide ...

    Text Solution

    |

  10. The heat generated in a circuit is dependent upon the resistance, cur...

    Text Solution

    |

  11. Percentage erros in the measurement of mass and speed are 2% and 3% re...

    Text Solution

    |

  12. 1 cm on the main scale of a vernier callipers is divided into 10 equal...

    Text Solution

    |

  13. While measuring the acceleration due to gravity by a simple pendulum ,...

    Text Solution

    |

  14. A student measured the diameter of a wire using a screw gauge with lea...

    Text Solution

    |

  15. Find (dy)/(dx) for the following : (i) y=x^(7//2)

    Text Solution

    |

  16. Given s=t^(2)+8t+9, find (ds)/(dt)

    Text Solution

    |

  17. If s= ut +(1)/(2) at^(2), where u and a are constants. Obtain the valu...

    Text Solution

    |

  18. The area of a blot of ink is growing such that after t seconds, its ar...

    Text Solution

    |

  19. The area of a circle is given by A=pir^(2), where r is the radius . Ca...

    Text Solution

    |

  20. Obtain the differential coefficient of the following : (i) (x-1) (2x...

    Text Solution

    |