Home
Class 12
PHYSICS
Assertion: If length of a rod is doubled...

Assertion: If length of a rod is doubled, the breaking load remains the same.
Reason: Breaking load is equal to the elastic limit.

A

Assertion is True, Reason is True,
Reason is a correct explanation for Assertion.

B

Assertion is True, Reason is True,
Reason is not a correct explanation for Assertion.

C

Assertion is True, Reason is False.

D

Assertion is False but, Reason is True.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    TARGET PUBLICATION|Exercise Competitive Thinking|69 Videos
  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos
  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos
  • CURRENT ELECTRICITY

    TARGET PUBLICATION|Exercise Evaluation Test|6 Videos
  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos

Similar Questions

Explore conceptually related problems

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c ) If assertion is true but reason is false. (d) If assertion and reason are false. Q. Assertion: If length of a rod is doubled the breaking load remains unchanged. Reason: Breaking load is equal to the elastic limit.

Assertion: soldiers are asked to break steps while crossing the bridge. Reason: The frequency of marching may be equal to the natural frequency of bridge and may lead to resonance which can break the bridge.

Assertion : In the proces, H_(2(g)) rarr 2H_((g)) .entropy increases. Reason : Breaking of bonds is an endothermic process.

The metal which breaks immediately after elastic limit is

Assertion :- Mass movement in the phloem is due to loading of sucrose. Reason:- Sucrose loading in phloem leads to creation of water potential gradient.

Solids which break above the elastic limit are called

The length of a copper wire increases by 0.01 metre, when it is loaded with 10 kg weight. Another copper wire of the same length but double the radius is loaded with the same weight. The increase in length of the second wire, in metre, will be

Assertion : Two wires A and B have the same cross-sectional area and are made of the same material but the length of wire A is twice that of B. For a given load, the strain in wire A is twice that in B. Reason : For a given load, the extension in a wire is prportional to its length.

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c ) If assertion is true but reason is false. (d) If assertion and reason are false. Q. Assertion: Lead is more elastic than rubber. Reason: if the same load is attached to lead and rubber wires of the same cross-sectional area, the strain of lead is very much less than that of rubber.

TARGET PUBLICATION-ELASTICITY-Critical Thinking
  1. A uniform rod of cross-section 4 mm^(2) is heated from 0^(@)C " to "1...

    Text Solution

    |

  2. A steel of Xkg-wt//m^(2) is applied to a wire whose Young's modulus is...

    Text Solution

    |

  3. A steel wire 2 mm in diameter is just stretched between two fixed poin...

    Text Solution

    |

  4. The ratio of lengths of two rods A and B of same material is 1:2 and t...

    Text Solution

    |

  5. The backlash error can be elimintated in Searle's experiment, by rotat...

    Text Solution

    |

  6. To lift a load by a metallic rope, its radius of cross-section should ...

    Text Solution

    |

  7. Which of the following relations is incorrect for the sag(delta) of be...

    Text Solution

    |

  8. A beam of metal supported at the two edges is loaded at the centre. Th...

    Text Solution

    |

  9. A wire fixed at the upper end stretches by length l by applying a forc...

    Text Solution

    |

  10. On stretching a wire, the elastic energy stored pre unit volume is

    Text Solution

    |

  11. If one end of a wire is fixed with a rigid support and the other end i...

    Text Solution

    |

  12. A wire of length L and cross sectional area A is made of a material of...

    Text Solution

    |

  13. A metal rod of Young's modulus 2xx10^(10)Nm^(-2) undergoes an elastic ...

    Text Solution

    |

  14. If the volume of the given mass of a gas is increased four times, the ...

    Text Solution

    |

  15. A steel wire of length 5 m and area of cross-section 4 mm^(2) is stret...

    Text Solution

    |

  16. One end of a long mettalic wire of length L is tied to the ceiling. T...

    Text Solution

    |

  17. A rubber cord has a cross -sectional area 1 mm^(2)and total unstretche...

    Text Solution

    |

  18. The average depth of indian Ocean is about 3000 m. The fractional comp...

    Text Solution

    |

  19. Forces of 100 N each are applied in opposite direction on the upper an...

    Text Solution

    |

  20. Assertion: If length of a rod is doubled, the breaking load remains th...

    Text Solution

    |