10 TH- PHYSICS

Reflection of light by curved surfaces;

 Images formed by spherical mirrors

, centre of curvature

, principal axis,

 principal focus, 

focal length,

 mirror formula (Derivation not required)

,magnification.

 Refraction; Laws of refraction, refractive index. 

Refraction of light by spherical lens; 

Image formed by spherical lenses; 

Lens formula (Derivation not required); 

Magnification. 

Power of a lens.

 Functioning of a lens in human eye, 

defects of vision and their corrections, 

applications of spherical mirrors and lenses.

 Refraction of light through a prism,

 dispersion of light,

 scattering of light,

 applications in dailylife (excluding colour of the sun at sunrise and sunset) 

Electric current, 

potential difference and electric current.

 Ohm’s law; Resistance, Resistivity

, Factors on which the resistance of a conductor depends.

 Series combination of resistors, 

parallel combination of resistors and its applications in daily life. 

Heating effect of electric current and its applications in daily life.

 Electric power, 

Interrelation between P, V, I and R. 

Magnetic field, field lines, 

field due to a current carrying conductor,

 field due to current carrying coil or solenoid;

 Force on current carrying conductor, 

Fleming’s Left Hand Rule,

 Direct current.

 Alternating current:

 frequency of AC.

 Advantage of AC over DC. 

Domestic electric circuits. 

Our environment: 

Eco-system,

 Environmental problems,

 Ozone depletion, 

waste production and their solutions.

 Biodegradable and non-biodegradable substances.