Question

. If a graph of stress (along y axis) versus strain (along x axis) is plotted within elastic limits then it is straight line

a. Parallel to x axis b. Parallel to y axis​

Answer 1

Answer:

Option b.......

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Answer 2

If a graph of stress (along y axis) versus strain (along x axis) is plotted within elastic limits then it is straight line passing through the origin and not parallel to any axis( in practical conditions)

• According to Hooke's Law,
• Stress α Strain    within elastic limits.
• Since stress and strain are directly proportional, If we increase one quantity, the other increases simultaneously.
• If strain is increased, stress also increases.
• Hence, given options are wrong since the graph can never be parallel to any of the axis.
• For line to parallel to an axis, the quantiies should be independent of each other.
• That is not the cae here, since when stress increases, strain does not remain the same.
• Hence, the graph of quantities directly proportional to each other is a straight line and passing through the origin.