Page 313 - MODUL SPEKTRUM FIZIK SPM

LIGHT / CAHAYA

1. (a) P =

(b) (i) 1.2 > 1.1
(ii) 1.2 < 1.1
(iii)Thickness of lens increases, focal length decreases.
Semakin tebal kanta cekung, semakin pendek panjang fokus
(iv) Refraction / Pembiasan
(c)

2. (a) Incident angle / Angle of incidence
Sudut tuju
(b) i > r
(c) (i) Same / sama
(ii) 2.1 ˂ 2.2
(iii) Density increases, r decreases / Ketumpatan bertambah, r berkurang
(iv) n for X > n for Y
(d) Density increases, refractive index increases.
Ketumpatan meningkat, indeks biasan meningkat.
(e) Refraction of light / Pembiasan cahaya

3. (a) Reciprocal of focal length / salingan jarak fokus
(b) Object distance in Diagram 3.1 < 3.2.
Image distance in Diagram 3.1 > 3.2
Size of image in Diagram 3.1 > 3.2
Object distance increases, image distance decreases.
Object distance increases, size of image decreases.
Jarak objek dalam Rajah 3.1 < 3.2
Jarak imej dalam Rajah 3.1 > 3.2
Saiz imej dalam Rajah 3.1 > 3.2
Jarak objek bertambah, jarak imej berkurang.
Jarak objek bertambah, saiz imej berkurang.

4. (a) Distance from the pole, P to the focal point, F where parallel light rays focus on after being
reflected by the concave mirror.
Jarak dari kutub, P ke titik fokus, F di mana sinar cahaya selari menumpu selepas dipantulkan
dari cermin cekung itu.
(b) Curvature of mirror N is bigger than in mirror M.
Angle of bending of light ray in mirror N is bigger than in mirror M.

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