Home
Class 11
PHYSICS
The modulus of rigidity of a wire is giv...

The modulus of rigidity of a wire is given by the formula `W_(g)=(npir^(4)theta)/(2l)`. Which of these quantities should be measured very accurately and why?

Text Solution

Verified by Experts

The correct Answer is:
r, because its power is the highest in the expression
Promotional Banner

Topper's Solved these Questions

  • ERRORS AND THEIR MEASUREMENTS

    NN GHOSH|Exercise EXERCISES|17 Videos

  • ELASTICITY

    NN GHOSH|Exercise EXERCIES(b)|14 Videos

  • EXPANSION OF SOLIDS

    NN GHOSH|Exercise All Questions|18 Videos

Similar Questions

Explore conceptually related problems

Which quantity in a given formula should be measured most accurately Why?

To find the value of 'g' by using a simple pendulum, the following observations were made: Length of the thread, I =(100+- 0.1)cm Time period of oscillation, T = (2+-0.1)s Calculate the maximum permissible in measurement of 'g' which quanitiy should be measured more accurately and why ?

The length of an are of a circle is given by the formula l=(x)/(360^(@))xx2pir . If l =4pi cm and r=18cm, then find x.

The perimeter of a rectangle of length l and width w is given by the formula p=2(l+w) The variables in the given formula are

In the measurement of g using a simple pendulum, which quantity should be measured which quantity should be measured with maximum accuracy and why ?

The values of a number of quantities are used in a mathematical formula The quantity that should be most precise and accurate in measurement is the one

The area of rectangle of length l and width w is given by the formula A=l times w . Which of the following statement is true with respect to the given formula?

In an imeganary experiment, the Yound's modulus Y of a material is given by Y=( tau cos thetaT^(x))/(l^(3)) where tau is the torque, theta is the angle of twist, T is the time perod and l is the length of the wire. What is the value of x ?

A student measures the value of g with the help of a simple pendulum using the formula g = (4pi^(2)L)/(T^(2)) . He measures length L with a meter scale having least count 1 mm and finds it 98.0 cm . The time period is measured with the help of a watch of least count 0.1s . The time of 20 oscillations is found to be 40.4 s. The error Deltag in the measurment of g is (" in" m//s^(2)) .

NN GHOSH-ERRORS AND THEIR MEASUREMENTS -EXERCISES
  1. A student makes measurements of the diameter of a wire with the help a...

    Text Solution

    |

  2. Two students A and B make measurement of the focal length of the same ...

    Text Solution

    |

  3. The ammeter and voltmeter connected in series and parallel with a resi...

    Text Solution

    |

  4. Time of fall of a body =(10.0pm0.5) sec Acceleration due to gravity ...

    Text Solution

    |

  5. The mass of a body =(100pm2%)ms^(-2) kg and the volume of the body =(1...

    Text Solution

    |

  6. The measures of the length and breadth of a rectangle are (30pm3%) and...

    Text Solution

    |

  7. In a simple pendulum l=(100.0pm0.5) cm and t=(2.00pm0.01) sec. What is...

    Text Solution

    |

  8. The modulus of rigidity of a wire is given by the formula W(g)=(npir^(...

    Text Solution

    |

  9. Show that percentage error in the measurement of m/B by a deflection m...

    Text Solution

    |

  10. In a prisim mu=(sin[(A+D)//2])/(sin(A//2)). Find the formula for the p...

    Text Solution

    |

  11. The voltage across a resistor is 8.0pm0.2 volt and the current through...

    Text Solution

    |

  12. Calculate the volume of a sphere of radius (3.0pm0.1) cm, if the error...

    Text Solution

    |

  13. A physical quantity P is related to four observables a, b, c and d as ...

    Text Solution

    |

  14. The length, breadth and thickness of a sheet are 4.234m, 1.005 m and 2...

    Text Solution

    |

  15. In a simple pendulum experiment the length of the pendulum is measered...

    Text Solution

    |

  16. Show that if two sets of measured quantities have mean values m(1) and...

    Text Solution

    |

  17. A body is moving at speed of 0.3m//s. To measure its speed with an acc...

    Text Solution

    |