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MODUL • Fizik TINGKATAN 5

Senarai bahan Dua pembesar suara, penjana frekuensi-audio, dawai penyambung dan pembaris meter, padang atau gelanggang
dan radas terbuka.
List of materials Two loudspeakers, audio-frequency generator, connection wires and metre ruler, open court or field.
and apparatus
Penjana berfrekuensi audio
Audio-frequency generator Pembesar suara
Loudspeaker
Pembesar suara
Loudspeaker

Susunan radas a = 1 m
Arrangement of the
apparatus
UNIT 1

Pendengar D = 2 m
Listener

1. Dua pembesar suara dilaraskan pada jarak 1 m antara kedua-duanya.
The two loudspeakers are adjusted at 1 m apart.

2. Dengan menggunakan pembaris meter, jarak antara pendengar dan pembesar suara,
. D = 2.0 m, diukur.
Penjana berfrekuensi audio dihidupkan. Eksperimen ini dijalankan di gelanggang terbuka supaya tiada
gema.
By using a metre rule, the distance between the listener and the loudspeaker, D = 2.0 m, is measured.
Prosedur The audio-frequency generator is switched on. This experiment is conducted in an open court so that there is no echo.
Procedure 3. Pendengar berjalan selari dengan sisi depan meja dan jarak antara dua kawasan bunyi kuat
berturutan, x diukur dan direkodkan. / The listener walks in a straight path parallel to the front edge of
the table and the distance between two successive loud regions, x, is measured and recorded.

4. Eksperimen diulangi pada jarak yang berbeza antara pendengar dengan pembesar suara,
D = 4.0 m, 6.0 m, 8.0 m dan 10.0 m.
The experiment is repeated with different distances between the listener and the loudspeakers,
D = 4.0 m, 6.0 m, 8.0 m and 10.0 m.

Menjadualkan D / m 2.0 4.0 6.0 8.0 10.0
data
Tabulation of data x / m

x / m

Menganalisis data
Analysis of the data

0 D / m

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