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STATEMENT - 1 : When a rod lying freely ...

STATEMENT - 1 : When a rod lying freely is heated, no thermal stress is developed in it.
and
STATEMENT - 2 : On heating, the length of the rod increase.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : When a rod lying freely is heated, no thermal stress is developed in it. Reason R : On heating the length of the rod increases. In the light of the above statements, choose the correct answer from the options given below:

    A
    Both A and R are true but R is NOT the correct explanation of A
    B
    A is false but R is true
    C
    A is true but Ris false
    D
    Both A and R are true and R is the correct explanation of A

  • STATEMENT - 1 : A metallic rod placed upon smooth surface is heated. The strain produced is ZERO. STATEMENT - 2 : Strain is non-zero only when stress is developed in the rod. STATEMENT - 3 : Two metallic rods of length l_(1) and l_(2) and coefficient of linear expansion alpha_(1) and alpha_(2) are heated such that the difference of their length ramains same at ALL termperatures Then (alpha_(1))/(alpha_(2))=(l_(2))/(l_(1))

    A
    TTT
    B
    FTF
    C
    FFT
    D
    FFF

  • STATEMENT 1: A free rod when heated experiences no thermal stress. STATEMENT 2: The rod when heated increases in length.

    A
    Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of statement 1.
    B
    Statement 1 is true, Statement 2 is true
    C
    Statement 1 is true, Statement 2 is false
    D
    statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of statement 1.

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    STATEMENT - 1 : A metallic rod is clamped between two fixed support. The rod is heated but not allowed to bend. Tensile stress is developed in it. STATEMENT - 2 : A metallic rod is fixed between two rigid supports. The rod is heated. The strain produced in the rod is ZERO because there is no change in length STATEMENT - 3 : The practical value of Poisson's ratio lies between 0 and 0.5.

    Assertion A metallic rod is fixed from two ends as shown in figure. When the temperature is increased compressive stresses are developed in the rod. Reason At higher temperature, natural length of the rod will be more.

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    Consider the following statements. When a rod is heated freely, it expands and thermal strain set up in rod due to heating is /_\l/l=alpha/_\T Thermal stress developed in a solid heating is given by gamma(/_\l)/l Which of the following option is correct?

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