NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

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The ratio of radii of two wires of same material is 1:3. Then the ratio of their elongations on applying the same load is

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Correct option: C

0.375694444

The question is incomplete and does not provide enough information to determine the ratio of elongations. It needs additional information such as the applied load, length, and Young's modulus to calculate the elongations and their ratio.

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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