# NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties of Solids

Mechanical Properties of solids describe characteristics such as their strength and resistance to deformation. It describes about the ability of an object to withstand the stress applied to that object. Objects also resist changing their shape. Finding out solid’s mechanical properties is one of the core concepts in physics. Here you will be covering topics such as Young’s modulus of copper and steel. We will be finding the compression strain of each column of a cylinder and we are finding the ratio of the diameter of three wires if tension is the same in all of them. We will be finding the density of water when the pressure is at the bottom and even we will find the fractional change in the volume of a glass plate when pressure is applied. We will be calculating the pressure on a litre of water if it is compressed; along with that, you will be seeing what will happen when a ball is dropped into the Marina Trench, the deepest point in the planet’s ocean.