Frank ICSE Solutions for Class 9 Physics - Electricity and Magnetism: Static Electricity PAGE 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: Thales of Miletus was the scientist who observed the electric properties of amber.Solution 4: There are two … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: Static Electricity
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Frank ICSE Solutions for Class 9 Physics – Sound
Frank ICSE Solutions for Class 9 Physics - Sound PAGE 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 vacuum. It needs a material medium to travel.Solution 5: Yes, sound requires a material medium for … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Sound
Frank ICSE Solutions for Class 9 Physics – Sound: Range of Hearing
Frank ICSE Solutions for Class 9 Physics - Sound: Range of Hearing PAGE 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.Solution 3: One hertz is defined as one vibration produced in one second by sound producing object.Solution 4: The … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Sound: Range of Hearing
Frank ICSE Solutions for Class 9 Physics – Sound: Production and Propagation of Sound
Frank ICSE Solutions for Class 9 Physics - Sound: Production and Propagation of Sound PAGE 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.Solution 4: Yes, sound can propagate through solids and liquids.Solution 5: No, sound cannot be produced in … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Sound: Production and Propagation of Sound
Frank ICSE Solutions for Class 9 Biology – Respiratory System
Frank ICSE Solutions for Class 9 Biology - Respiratory System PAGE NO:176Solution 1: Respiration: It is a process of release of energy from food substances such as glucose and fats under the control of enzymes, to carry out life processes, by the living organisms. Respiration is essential for life as energy produced during this process is utilized by the organisms to … [Read more...] about Frank ICSE Solutions for Class 9 Biology – Respiratory System