NCERT

Shear modulus (G) or rigidity modulus is the ratio of shearing stress to shearing strain within the elastic limit. It helps measure the solid's resistance to deformation by parallel forces acting tangentially on its surface. Mathematically,  
G= Shearing Strain/Shearing Stress = (F/A)/0
Where, A

According to the class 11 mechanical properties of solids, Bulk modulus (K) is within the elastic limit, the ratio of volumetric stress to volumetric strain. Bulk modulus measures the resistance of a solid or fluid to compression. Mathematically, it is represented as the,
K= Volumetric Strain/Volume

Those who are preparing for any competive exam such as JEE Main, NDA and others really need to memorise formulas. Check the important formulas below;  

Circle

• Standard equation (center at origin): $x^2+y^2=r^2$
  $x^2 + y^2 = r^2$

• General form: $x^2 + y^2 + 2gx + 2fy + c = 0$

• Center = (–g, –f), Radius = ?(g² + f² – c)

 Parabola: 

• Standard form (hor

According to the mechanical properties of fluids class 11, the liquid's ability to flow in narrow spaces in opposition to external forces like gravity, without assistance is called the capillarity or capillary action.
When the liquid rises or falls in a narrow tube (capillary tube), it is called capi

Eccentricity is a measure that defines the shape of specific segment of conic sections. Student can check the eccentricity for different conic sections below;

• Circle: e = 0

• Parabola: e = 1

• Ellipse: 0 < e < 1

• Hyperbola: e > 1

NCERT Solutions for Conic Sections includes eccentricity, Directix, Matrix and other re

The property of a liquid surface which lets it behave like a stretched elastic membrane is called surface tension. It is the force per unit length acting in the plane of the interface between any medium such as air and liquid, tending to contract the surface area. In the cohesive forces between the

Viscosity is the measure of the resistance of fluid towards the shear stress when it is applied for fluid to flow or deformation. Viscosity describes the internal friction within a fluid. A fluid with high viscosity has more internal friction and hence it resists motion. If one pours water and honey

According to the NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties of Fluids, when an object is immersed in the fluid, the fluid opposes its weight and exerts an upward force, called buoyancy. It is due to the difference in the pressure of the fluid at different depths, at the bot

According to Pascal's Law when in a confined fluid, pressure is applied, the pressure increase is transmitted undiminished and equally in all directions throughout the fluid. In hydraulic systems, this principle is crucial where a small force is applied at one point resulting in more force at anothe

The most challenging chapters in Chemistry Class 12 are Electrochemistry, Chemical Kinetics, and coordination compounds.