Page 591 - MODUL SPEKTRUM FIZIK SPM

(d) The position of eye must be perpendicular to the scale of the Bourdon gauge / Pressure gauge 1
/ thermometer to avoid parallax error.
Kedudukan mata mestilah serenjang kepada skala Tolok Bourdon / Tolok Tekanan /
Termometer untuk mengelakkan ralat paralaks.

6(a)(i) sin i is directly proportional to sin r. 1
sin i is adalah berkadar terus dengan sin r.

(ii) - Show the extrapolation of the graph 1
- Show the vertical line corresponding to the sin r = 0.65 1 4
- Identify the value of sin i = 0.76 1
- Correct answer 1
i = 49.5
(b) - Draw a sufficiently large triangle (minimum 4 x 4) 1
- Correct substitution (follow candidate’s triangle) 1
Example:
%.7$% 3
%.*$%
- Correct answer with unit, n = 1.17 1

(c) – Correct substitution

, . × /
=
,

. × / 1 3
. =
,

– Correct answer with units 2
–1
8
v2 = 2.56 x 10 m s

-
(d) The position of eye must be perpendicular to the scale of the protractor to avoid parallax error. 1
Kedudukan mata mestilah serenjang kepada skala protaktor untuk mengelakkan ralat
paralaks.

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