NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties Of Solids

 

NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties Of Solids: If a rubber band is stretched by applying a variable force after a particular force the rubber band brakes. The breakage happens when the applied force is beyond the elastic limit. To compare the elastic limit we use the term modulus of elasticity. The NCERT Solutions for Class 11 Physics Chapter 9 mainly deals with three terms stress, strain, and modulus of elasticity. 

The main content headings of the NCERT Solutions for Class 11 Physics Chapter 9 are given below:

9.1 Introduction

9.2 Elastic Behaviour Of Solids

9.3 Stress And Strain

9.4 Hooke’s Law

9.5 Stress-strain Curve

9.6 Elastic Moduli

9.7 Applications Of Elastic Behaviour Of Materials

Below are the important formulas of the NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties Of Solids

  • Stress=\frac{Force}{Area}

  • HOOKE's LAW

E=\frac{Stress }{Strain}

E= modulus \: of \: elasticity

  • longitudinal strain

The ratio of change in length to the original length.

  • A wire of length L and radius r is clamped to a rigid support and a mass m is attached to the other end, then Young's modulus is

Y=\frac{mgL}{\pi r^{2}\Delta l}

r = Radius of wire

L = Original length

\Delta l  = Change in length

mg = weight. Try to derive the above formula yourself

Below are a few questions for the practice of NCERT Class 11 Chapter 9 Mechanical Properties Of Solids:

1. Compute the fractional change in volume of a glass slab, when subjected to a hydraulic pressure of 10 atm.

2. How much should the pressure on a liter of water be changed to compress it by 0.10%?

The NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties Of Solids are provided here

NCERT Solutions for class 11 Physics

Chapter-1

Physical world

Chapter-2

Units and Measurement

Chapter-3

Motion in a straight line

Chapter-4

Motion in a Plane

Chapter-5

Laws of Motion

Chapter-6

Work, Energy and Power

Chapter-7

System of Particles and Rotational motion

Chapter-8

Gravitation

Chapter-10

Mechanical Properties of Fluids

Chapter-11

Thermal Properties of Matter

Chapter-12

Thermodynamics

Chapter-13

Kinetic Theory

Chapter-14

Oscillations

Chapter-15

Waves

NCERT Solutions for Class 11- Subject wise

NCERT Solutions for Class 11 Biology

NCERT Solutions for Class 11 Maths

NCERT Solutions for Class 11 Chemistry

NCERT Solutions for Class 11 Physics

 

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