Consider the following statements:
If there is a state of pure shear $τ$ at a point then
1. The Mohr's circle is tangential to the y-axis
2. The centre of the Mohrls circle coincides with the origin
3. Unlike principal stresses are each numerically equal to $τ$
4. Principal stresses are like.
Which of these statements is/are correct/

1 only

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1 and 2

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2 and 3

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3and 4

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Solution

The correct option is C 2 and 3
Principal stresses are $τ_{x y} a n d - τ_{x y}$ .

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The correct option is C 2 and 3Principal stresses are τxy and −τxy.

The correct option is C 2 and 3
Principal stresses are $τ_{x y} a n d - τ_{x y}$ .