Paper 2 2008 No. 1

1. Diagram 1 shows a slinky spring being moved left and right continuously.



(a) Complete the sentence below by ticking (x) the correct box.
The wave produced by the slinky is a
Transverse wave -------
Longitudinal wave -------
[1 mark]

(b) On Diagram 1, mark ‘X’ on any one of the crests of the wave.
[1 mark]

(c) Complete the following sentence by underlining the correct phrase in the bracket.

The direction of the hand movement is (the same as / opposite to / perpendicular to ) the direction of the wave movement.
[1 mark]

(d) What is transferred by the wave?

……………………………………………
[1 mark]

Spm 2005: Paper 2, Question No. 2:

Two similar loudspeaker are placed 0.8 m apart. They emit a coherent sound wave. A girl walks slowly parallel to the two loudspeakers at a distance 3.2 m in front of the loudspeakers. She hears a loud sound and weak sound alternately. Figure 2.1 shows the positions of the loud and weak sounds.

(a) What is meant by a coherent wave?

[1]

(b) The distance between three positions of the loud sound is 4.5 m, as shown in Figure 2.1.

Calculate the wavelength of the sound wave.

[3]

(c) The loud sound is heard due to the constructive interference of the sound waves. State how the constructive interference occurs.

[1]