Home
Class 11
PHYSICS
Read each of the statement below careful...

Read each of the statement below carefully and state, with reasons, if it is true or false.
(a) The modulus of elasticity of rubber is greater than that of steel.
(b) the stretching of a coil is determined by its shear modulus.

Text Solution

Verified by Experts

Answer: (a) False (b) True)
(a) For a given stress, the strain in rubber is more than it is in steel.
Young’s modulus, `Y=("Stress")/("Strain")`
For a constant stress: `Yprop(1)/("Strain")`
Hence, Young’s modulus for rubber is less than it is for steel.
(b) Shear modulus is the ratio of the applied stress to the change in the shape of a body. The stretching of a coil changes its shape. Hence, shear modulus of elasticity is involved in this process.
Promotional Banner

Topper's Solved these Questions

  • MECHANICAL PROPERTIES OF SOLIDS

    NCERT ENGLISH|Exercise EXERCISE|21 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    NCERT ENGLISH|Exercise EXERCISE|31 Videos

  • MOTION IN A PLANE

    NCERT ENGLISH|Exercise EXERCISE|32 Videos

Similar Questions

Explore conceptually related problems

Read each statement below carefully and state with reason and examples, if it is true or false. A scalar quantity is one that

Read each statement below carefully and state with reasons, with it is true or false : (a) The magnitude of vector is always a scalar. (b) Each component of a vector is always a scalar. (c) The total path length is always equal to the magnitude of the displacement vector of a particle. (d) The average speed of a particle (defined as total path length divided by the time taken to cover the path) is greater or equal to the magnitude of average velocity of the particle over the same interval of time. (e) three vectors not lying in a plane can never add up to give a null vector.

Read each statement below carefully and state, with reasons, if it is true or false : (a) The net acceleration of a particle in circular motion is always along the radius of the circle towards the center. (b) The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point. (c) The acceleration vector of a particle in uniform circular motion averaged over one cycle is a null vector.

Read each statement below carefully and state with reason and examples, if it is true or false. A scalar quantity is one that (a) is conserved in a process (b) can never take negative values (c) must be dimensionless (d) does not vary from one point to another in space (e) has the same value for observers with different orientations of axes.

State whether the following statement is true or false. A hypertonic solution has a water concentration greater than that is found inside the cell. A. True B. False

State whether the following statement is true or false ? If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.

Write true or false for the following statements: A vapour is a gaseous state of a liquid below its boiling point.

State in each case, whether the given statement is true or false : [a,b,c,1,2,3} is not a set.

State whether the following statements are true or false. Blue-green algae are more closely related to bacteria than to green algae. A. True B. False

State in each case, whether the given statement is true or false : If B is the set of all consonants , then c in B.

NCERT ENGLISH-MECHANICAL PROPERTIES OF SOLIDS-EXERCISE
  1. Fig., shows the stress-strain curve for a given materal. What are (a) ...

    Text Solution

    |

  2. The stress versus strain graph for two materials A and B are shown in ...

    Text Solution

    |

  3. Read each of the statement below carefully and state, with reasons, if...

    Text Solution

    |

  4. Two wires of diameter 0.25 cm, one made of steel and the other made of...

    Text Solution

    |

  5. The edges of an aluminum cube are 10 cm long. One face of the cube is ...

    Text Solution

    |

  6. Four identical hollow cylindrical columns, support a ig structure of ...

    Text Solution

    |

  7. A piece of copper having a rectangular cross section of 15.2 xx 19.1 m...

    Text Solution

    |

  8. A steel cable with a radius of 1.5 cm support a chairlift at a ski are...

    Text Solution

    |

  9. A rigid bar of mass 15 kg is supported symmetrically by three wires ea...

    Text Solution

    |

  10. A 14.5 kg mass, fastened to the end of a steel wire of unstretched len...

    Text Solution

    |

  11. Compute the bulk modulus of water from the following data : initial vo...

    Text Solution

    |

  12. What is the density of ocean water at a depth, where the pressure is 8...

    Text Solution

    |

  13. Compute the fractional change in volume of a glass slab, when subjecte...

    Text Solution

    |

  14. Determine the volume contraction of a solid copper cube, 10 cm on an e...

    Text Solution

    |

  15. How much should the pressure on a litre of water be changed to compres...

    Text Solution

    |

  16. Anvils made of single crystal of diamond , with shape as shown in fig....

    Text Solution

    |

  17. A rod of length 1.05 m having negliaible mass is supported at its ends...

    Text Solution

    |

  18. A mild steel wire of length 1.0 m and cross-sectional are 0.5 xx 10^(-...

    Text Solution

    |

  19. Two strips of metal are riveted together at their ends by four rivets,...

    Text Solution

    |

  20. The marina Trench is located in the pacific ocean, and at one place it...

    Text Solution

    |