Page 539 - MODUL SPEKTRUM FIZIK SPM

6.4 Interference of wave/ Interferens gelombang bunyi

Diagram 4 shows two audio technicians is going to set a close hall so that the audient can
enjoy the sound perform by a singer clearly. When the workers bring the two speakers closely
to another, the distance beside two chairs must be set further apart so that the sound effect is
good enough. The works can be illustrated as shown in the Diagram 4.
Rajah 4 menunjukkan dua juruteknik audio sedang menyiapkan dewan tertutup supaya
penonton boleh menikmati bunyi penyanyi dengan jelas. Apabila juruteknik membawa kedua-
dua pembesar suara mendekati antara satu sama lain, jarak antara dua kerusi mesti
diletakkan lebih jauh supaya kesan bunyi lebih baik.

Based on the information and observation:
Berdasarkan maklumat dan pemerhatian di atas:
(a) State one suitable inference [1 mark]
Nyatakan satu inferens yang sesuai [1 markah]

(b) State one suitable hypothesis [1 mark]
Nyatakan satu hipotesis yang sesuai [1 markah]

(c) With the use of apparatus such as loudspeaker, audio signal generator and
others apparatus, describe one experiment to investiage the hypothesis stated in
3(b).
Dengan menggunakan radas seperti pembesar suara, penjana isyarat audio dan
lain-lain radas, terangkan satu eksperimen untuk menyiasat hipotesis yang
dinyatakan di 3(b).
In your description, state clearly the following:
Dalam penerangan anda, jelaskan perkara berikut:
i) The aim of the experiment/ Tujuan eksperimen.
ii) The variable in the experiment./ Pembolehubah dalam eksperimen.
iii) The list of the apparatus and materials/ Senarai radas dan bahan.
iv) The arrangement of the apparatus/ Susunan radas.
v) The prosedure of the experiment which includes one method of controlling the
manipulated variable and one method of measuring the responding variable.
Prosedur eksperimen termasuk kaedah mengawal pembolehubah dimanipulasi
dan kaedah mengukur pembolehubah bergerak balas
vi) The way to tabulate the data/ Cara anda menjadualkan data.
vii) The way to analyse the data/ Cara anda menganalisis data
[10 marks/ markah]

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