7

62

63

64

Simple harmonic motion (S.H.M) and its equation; phase; oscillations of a loaded spring-restoring

force and force constant; energy in S.H.M. Kinetic and potential energies; simple pendulum

derivation of expression for its time period.

65

66

67

68

7

er

69

70

7

71

72

Alternating currents, peak and RMS value of alternating current/voltage; reactance and

impedance; LC oscillations (qualitative treatment only); LCR series circuit; resonance; power in AC

circuits, power factor; wattless current.

Ray Optics: Reflection of light; spherical mirrors; mirror formula; refraction of light; total internal

reflection and its applications; optical; fibres; refraction at spherical surfaces; lenses; thin lens

formula; lensmaker's formula; magnification, power of a lens; combination of thin lenses in

contact; refraction and dispersion of light through a prism.

73

74

75

76

77

78

7

er

79

80