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A student plots a graph from hs readings...

A student plots a graph from hs readings on the determination of Young modulus of a metal wire but forgets to put the labels figure. The quantities on X and Y axes may be respectively

A

Weight hung and length increased

B

Stress applied and length increased

C

stress applied and strain develop

D

length increased and the weight hung

Text Solution

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The correct Answer is:
A, B, C, D
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In an experiment on the determination of young's Modulus of a wire by Searle's method , following data is available: Normal length of the wire (L) = 110 cm Diameter of the wire (d) = 0.01 cm Elongation in the wire (l) = 0.125 cm This elongation is for a tension of 50 N . The least counts for corresponding quantities are 0.01 cm , 0.00005 cm, and 0.001 cm , respectively. Calculate the maximum error in calculating the value of Young's modulus (Y) .

A wire havinga length L and cross- sectional area A is suspended at one of its ends from a ceiling . Density and young's modulus of material of the wire are rho and Y , respectively. Its strain energy due to its own weight is (rho^(2)g^(2)AL^(3))/(alphaY) . Find the vqalue of alpha

Knowledge Check

  • A student plots a graph from his reading on the determination of Young's modulus of a metal wire but forgets to label. The quantities on X and Y may be respectively.

    A
    Weight hung and length increased
    B
    Stress applied, and length increased
    C
    Stress applied and strain developed
    D
    Length increased and weight hung

  • A student analyzed tha data from a zero order reaction and obtained the graph shown. What labels should be attached to the X and Y axes, respectively ?

    A
    Time, concentration
    B
    Time, `1//`concentration
    C
    Time, ln (concentration)
    D
    `1//"time"`, concentration

  • A student performs an experiment to determine the Young's modulus of a wire, exactly 2m long, by Searle's method. In a partcular reading, the student measures the extension in the length of the wire to be 0.8mm with an uncertainty of +- 0.05mm at a load of exactly 1.0kg , the student also measures the diameter of the wire to be 04mm with an uncertainty of +-0.01mm . Take g=9.8m//s^(2) (exact). the Young's modulus obtained from the reading is

    A
    (a) `(2.0+-0.3)xx10^(11)N//m^(2)`
    B
    (b) `(2.0+-0.2)xx10^(11)N//m^(2)`
    C
    ( c ) `(2.0+-0.1)xx10^(11)N//m^(2)`
    D
    (d) `(2.0+-0.05)xx10^(11)N//m^(2)`

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