NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

1 Easy

1 of 1

Understanding +4 | -1

The length of an iron wire is

L

and area of cross-section is

A

. The increase in length is

l

on applying the force

F

on its two ends. Which of the following statement(s) is/are correct?

View answer and explanation

Correct option: A

Increase in length is inversely proportional to its length

L

Option C (Increase in length is inversely proportional to A) is correct because according to Young's modulus formula, the increase in length is inversely proportional to the area of cross-section.

More Questions from MECHANICAL PROPERTIES OF SOLIDS

Practice All Chapter MCQs →

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