Frank ICSE Solutions for Class 9 Physics – Electricity and MagnetismPAGE NO: 323 Solution 1: Positive and negative are the two kind of charges.Solution 2: Net charge on an atom is zero. Solution 3: 10 is the number of electrons present in Na+.Solution 4:…

Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: MagnestismPAGE NO: 320 Solution 1: Natural magnet is the deposits of the iron ore which has the attracting property of iron The properties of natural magnet are :The magnet has the di…

Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: Current ElectricityPAGE NO: 312 Solution 1: The flow of electrons in a particular direction in a conductor is called an electric current.Solution 2: An electric cell is the source of …

Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: Static ElectricityPAGE NO: 300 Solution 1: Electrostatics is defined as the study of charges at rest.Solution 2: Frictional electricity is also known as static electricity. Solution 3…

Frank ICSE Solutions for Class 9 Physics – SoundPAGE NO: 286 Solution 1: Yes, we can hear in the dark room.Solution 2: Sound is produced by the vibrating objects. Solution 3: Yes, sound is a form of energy.Solution 4: No, sound cannot travel through vac…

Frank ICSE Solutions for Class 9 Physics – Sound: Range of HearingPAGE NO: 284 Solution 1: The frequency of sound is defined as the number of vibrations produced by the sound producing object per second.Solution 2: S.I unit of frequency is hertz. Soluti…

Frank ICSE Solutions for Class 9 Physics – Sound: Production and Propagation of SoundPAGE NO: 278 Solution 1: Yes, Sound is form of energy.Solution 2: Sound is produced by the vibrating objects. Solution 3: No, sound cannot travel through vacuum.Solutio…

Frank ICSE Solutions for Class 9 Physics – LightPAGE NO: 261 Solution 1: Convex mirror has a wider field of view.Solution 2: Convex mirror always produces an erect image of the object. Solution 3: Convex mirror is used in vehicles to see the traffic on r…

Frank ICSE Solutions for Class 9 Physics – Light: Spherical MirrorsPAGE NO: 258 Solution 1: A spherical mirror is a part of a hollow glass sphere silvered on one side.Solution 2: Solution 3: Focal length = 1/2 of radius of curvature = 1/2 x 30 = 15cm.So…

Frank ICSE Solutions for Class 9 Physics – Light: Reflection of LightPAGE NO: 245 Solution 1: Light may be defined as the radiant energy which produces in us the sensation of sight. Light itself is invisible but makes other objects visible.Solution 2: Ye…