Answers : Question Section B 1

1.

(a)  To study the relationship between the distance of the source of light from        the object and the size of the shadow (b)  The distance of the source of light from the object (c)  6 cm (d)  The size of the shadow depends on the distance of the source of light         from the object./The closer the source of  light is to the object,        the bigger the shadow will be.

2.

(a)  Group 1: Aluminium plate; Mirror; Silver plate        Kumpulan 1: Kepingan aluminium; Cermin; Kepingan perak        Group 2: Cardboard; Wooden block; Cloth        Kumpulan 2: Kadbod; Bongkah kayu; Kain (b)  Group 1: Good reflectors of light        Kumpulan 1: Pemantul cahaya yang baik        Group 2: Poor reflectors of light        Kumpulan 2: Pemantul cahaya yang lemah (c)  1. Smooth            Licin        2. Shiny            Berkilat