NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

1 Hard

1 of 1

Application +4 | -1

A steel wire of length 2 m and Young's modulus

2.0 \times 10^{11} \mathrm{Nm}^{-2}

is stretched by a force. If Poisson ratio and transverse strain for the wire are 0.2 and

10^{-3}

respectively, then the elastic potential energy density of the wire is _____

\times 10^5

(in SI units)

View answer and explanation

Correct option: A

Option A (25) is correct because the elastic potential energy density is calculated using the formula involving Young's modulus and transverse strain.

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A 20 kg load is suspended by a wire of area of cross section is

1\,m{m^2}

. The stress produced in

N/{m^2}

\left[ {g = 10\,m{s^{ - 2}}\,} \right]\,

In magnitude hydraulic stress is equal to: A wire extends by

\mathrm{1 mm}

when a force is applied. Double the force is applied to another wire of same material and length but half the radius of cross-section. The elongation of the wire in mm will be Stress to strain ratio is equivalent to A

2\,\,m

long rod of radius

1\,\,cm

which is fixed from one end is given a twist of

0.8

radians. The shear strain developed will be The relationship between Young’s modulus

Y

, Bulk modulus

\mathrm{K}

and modulus of rigidity

\eta