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Sound  Sound wave:- A sound is a form of energy that is produced by a vibrating object. These vibrations Continue to and give the sensation of hearing. Production of the sound and propagation of sound Sound is produced when we vibrate any object and vibrating objects disturb the particles of the medium through which sound travel. These vibrations are continued to move the particle and reach at another end. Diagram How the vibrations transferred by A tuning fork The vibrations are transferred by the tuning fork by consecutive compression and rarefaction regions. Compression It is the reason in a medium where the leg of tuning fork moves outward and creates the region of high pressure which is called the compression region. Rarefaction region it is a region in a medium where there is high density,is called rarefaction region. Mechanical waves: - The waves which required the medium to travel from one place to other place, that waves are known as Mec...

Force And Laws Of Motion   Force:-              It is pull   or push acting on an object which can change   shape, size of an object   is called   force.   Effects of force 1.       Force can change the shape of an object . 2.       Force can change the direction of an object. 3.       Force can change the size of an object. 4.       Force can change the   speed of an object.   Types of force ·         Balanced force ·         Unbalanced force     Balanced force   A force is said to be balanced if the resultant of all the forces acting on an object is zero . Unbalanced force A force is said to be unbalanced if Resultant of two forces acting on an object is not equal to zero.   Newton ‘s laws of motion ...

MOTION LEARNING OBJECTIVES          After a study of the chapter, the learner will be able to • Distinguish between uniform and non-uniform motion using the graphical method. • Calculate numerically value the displacement, velocity, or acceleration using an equation of motion. Appreciate that uniform circular motion is accelerated motion. • Identify the given physical quantities as vector or scalar. • Explain that motion is relative in nature. Motion forms an integral part of our life. All microscopic and macroscopic objects in-universe show some kind of movement. All of the objects such as planets, moons, etc. Also exhibit motion.                                 All these examples can be clearly understood and discuss if we can describe motion, its property, and other related aspects such ...