4.4 GAS LAWS( BOYLE'S LAW) English Teacher Noraini khal
5.3 REFLECTION OF WAVES English Teacher Noraini khal
5.4 Refraction of waves KSSM English Teacher Noraini khal
5.5 Diffraction of waves English Teacher Noraini khal
5.6 Interference of waves(KSSM) English Teacher Noraini khal
6.4 Thin Lens Formula English Teacher Noraini khal
