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mohd irshad siddiki

· started a discussion

· 1 Months ago

b (Question: 331912.0 )

b is right

Question:

Whenever some external system of forces acts on a body, it undergoes some deformation. As

the body undergoes some deformation, it sets up some resistance to the deformation. This

resistance per unit area to deformation, is called:

Options:
A)

strain

B)

stress

C)

pressure

D)

modulus of elasticity

Solution:

Ans: (b)

Knowledge Expert

· commented

· 1 Months ago

Resistance per unit area of deformation is
Resistance means opposing pressure i.e. units of N/m^2, which can also be commonly called as stress
Deformation is change in length from the original length due to the application of external forces, which can also be called as strain
Thus the correct answer is Y(Modulus of Elasticity,)
TR

Knowledge Expert

· commented

· 1 Months ago

A solid material will deform when a load is applied to it. If it returns to its original shape after the load is removed, this is called elastic deformation. In the range where the ratio between load and deformation remains constant, the stress–strain curve is linear. Not many materials are linear and elastic beyond a small amount of deformation. A stiff material needs more force to deform compared to a soft material, and an infinite force would be needed to deform a perfectly rigid material, implying that it would have an infinite Young's modulus. Although such a material cannot exist, a material with a very high Young's modulus can be approximated as rigid.[2]
(d) is correct
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