Home
Class 12
PHYSICS
A block of weight 100 N is suspended by ...

A block of weight 100 N is suspended by copper and steel wires of same cross sectional area `0.5 cm^(2)` and, length `sqrt(3)` m and 1m, respectively. Their other ends are fixed on a ceiling as shown in figure. The angles subtended by copper and steel wires with ceiling are `30^(@) and 60^(@)`, respectively. If elongation in copper wire is `(Delta l_(C))` and elongation in steel wire is `(Delta l_(s))`, then the ratio `(Delta l_(C))/(Delta l_(s))` is -

[Young's modulus for copper and steel are `1 xx 10^(11) N//m^(2) and 2 xx 10^(11) N//m^(2)`, respectively]

Promotional Banner

Topper's Solved these Questions

  • JEE ADVANCED 2022

    JEE ADVANCED PREVIOUS YEAR|Exercise PHYSICS (SECTION-3)|4 Videos

Similar Questions

Explore conceptually related problems

A weight of 100N is suspended by two wires made by steel and copper as shown in figure length of steel wire is 1m and copper wire is sqrt(3)m . Find ratio of change in length of copper wire (Deltal_(c)) to change in length of steel wire (Deltal_(s)) . given Young's modulus Y_("Steel") =2xx10^(11) N//m^(2),Y_("Copper")=1xx10^(11) N//m^(2)

In the above question the ratio of the elongation produced in the copper wire and steel wire are

A copper wire of length 1.0 m and a steel wire of length 0.5 m having equal cross-sectional areas are joined end to end. The composite wire is stretched by a certain load which stretches the copper wire by 1 mm. If the Young’s modulii of copper and steel are respectively 1.0xx10^(11)Nm^(-2)"and"2.0xx10^(11)Nm^(-2), the total extension of the composite wire is:

Two wires of equal cross-section but one made of steel and the other of copper are joined end to end. When the cobination is kept under tension, the elongations in the two wires are found to be equal elongations in the two wire are found to be equal. What is the ratio of the lengths of the two wires? (Given, Young's modulus of steel = 2 xx 10^(11) Nm^(-2) and young's modulus of copper = 1.1 xx 10^(11) Nm^(-2) )

Young's modulus of brass and steel are 10 xx 10^(10) N//m and 2 xx 10^(11) N//m^(2) , respectively. A brass wire and a steel wire of the same length are extended by 1 mm under the same force. The radii of the brass and steel wires are R_(B) and R_(S) . respectively. Then

Steel and copper wires of same length are stretched by the same weight one after the other. Young's modulus of steel and copper are 2xx10^(11)(N)/(m^2) and 1.2xx10^(11)(N)/(m^2) . The ratio of increase in length is

Three copper wires of length and cross-sectional areas are (L,A) (2L,(A)/(2)),(L//2,2A) , resistance is

JEE ADVANCED PREVIOUS YEAR-MOCK TEST 2022 -QUESTIONS
  1. Consider a spherical gaseous cloud of mass density rho(r) in a free sp...

    Text Solution

    |

  2. A thin spherical indulating shell of radius R caries a uniformly distr...

    Text Solution

    |

  3. A current carrying wire heats a metal rod. The wire provides a constan...

    Text Solution

    |

  4. In a radioactive sample. .(19)^(40)K nuclei either decay into stable ....

    Text Solution

    |

  5. A cylindrical capillary tube of 0.2 mm radius is made by joining two c...

    Text Solution

    |

  6. Conducting wire of parabolic shape, initially y=x^(2) is moving with ...

    Text Solution

    |

  7. In the circuit shown, initially there is no change on capacitors and k...

    Text Solution

    |

  8. A charged shell of radius R carries a total charge Q. Given phi as the...

    Text Solution

    |

  9. One mole of a monatomic ideal gas goes through a thermodynamic cycle, ...

    Text Solution

    |

  10. Consider two palne convex lanse of same radius of curvature and refrec...

    Text Solution

    |

  11. Let us consider a system of units in which mass and angular momentum a...

    Text Solution

    |

  12. Two identical moving coil galvanometers have 10Omega resistance and f...

    Text Solution

    |

  13. A particle is moved along a path AB-BC-CD-DE-EF-FA, as shown in figure...

    Text Solution

    |

  14. A block of weight 100 N is suspended by copper and steel wires of same...

    Text Solution

    |

  15. A train S1, moving with a uniform velocity of 108 km/h, approaches ano...

    Text Solution

    |

  16. A parallel plate capacitor of capacitance C has spacing d between two ...

    Text Solution

    |

  17. A liquid at 30°C is poured verly slowly into a Calorimeter that is at ...

    Text Solution

    |

  18. A planar structure of length L and width W is made of two different op...

    Text Solution

    |