Frank ICSE Solutions for Class 9 Physics - Light: Spherical Mirrors PAGE 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.Solution 4: Focal point is the principal focus of the mirror where a parallel beam of light meets(or appear … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Light: Spherical Mirrors
Physics
Frank ICSE Solutions for Class 9 Physics – Light: Reflection of Light
Frank ICSE Solutions for Class 9 Physics - Light: Reflection of Light PAGE 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: Yes, light is a form of energy that produces the sensation of vision in our eyes.Solution 3: The velocity of light … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Light: Reflection of Light
Frank ICSE Solutions for Class 9 Physics – Heat: Transmission of Heat
Frank ICSE Solutions for Class 9 Physics - Heat: Transmission of Heat PAGE NO: 226 Solution 1: Conduction, convection and radiation are three modes of transfer of heat.Solution 2: The process of conduction involves the transmission of heat from the hot end to the cold end from particle to particle of the medium.Solution 3: No, conduction is not possible in … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Heat: Transmission of Heat
Frank ICSE Solutions for Class 9 Physics – Heat: Thermometry
Frank ICSE Solutions for Class 9 Physics - Heat: Thermometry PAGE NO: 209 Solution 1: Temperature is the quantity that tells about the thermal state of a body i.e. the degree of hotness or coldness of a body.Solution 2: Thermometer is used for measuring the temperature of a body.Solution 3: Thermometer works on the principal that substances expand when heated and … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Heat: Thermometry
Frank ICSE Solutions for Class 9 Physics – Heat: Thermal Expansion
Frank ICSE Solutions for Class 9 Physics - Heat: Thermal Expansion PAGE NO: 202 Solution 1:Coefficient of Linear expansion is equal to the change in length of a rod of length 1m when its temperature rises by 1°c. Coefficient of superficial expansion is equal to the change in area of a rod of area 1m2 when its temperature rises by 1°c. Coefficient of volume … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Heat: Thermal Expansion