TARIKH: 01 MEI 2016

1. Diagram 15 shows water waves propagating towards a reflector in a ripple tank.

Which wave pattern is observed after it hits the reflector?

A. B.

C.

D.

2. Diagram 16 shows a graph of an oscillation system experiences damping.

Which of the following quantity does not change?

A. Size of oscillationB. Period of oscillationC. Energy of oscillationD. Amplitude of oscillation

3. A system is oscillating at its natural frequency in a vacuum. What happens to the total energy of the oscillating system after an hour?

A. IncreasesB. DecreasesC. Remains constant

4. Diagram 17 shows the wavefronts as the waves approach the bay and the cape.

Diagram 17

The wavefronts take the shape of the beach. This is cause by the phenomenon of

A. interference B. reflectionC. diffraction D. refraction

5. Mr. Tan use loudspeaker to call upon his student at the field. The sound propagates in the air at the speed of 330 ms-1 with 0.9 m wavelength. What is the frequency of the sound wave?

A. 148.5 Hz B. 264 HzC. 300 Hz D. 366.7 Hz

6. What will happen to a thin piece of glass when a soprano sings with a high note?

A. Vibrate B. BreakC. Fall D. Nothing happen

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7. Diagram 2 shows the arrangement of apparatus to determine the wavelength of monochromatic light. A fringe pattern is formed on the translucent screen. The distance between the two slits is S1 and S2 is x mm and the distance from the screen with double slits screen is D m.

Diagram 2

(a) What is meant by monochromatic light?

______________________________________________________________________[1 mark]

(b) (i) Describe the fringe pattern which can be observed on the screen.

_________________________________________________________________[1 mark]

(ii) What is the wave phenomenon involved in 2(b)(i)?

_________________________________________________________________[1 mark]

(c) What happens to the pattern of the fringes when

(i) distance between S1 and S2 increases:

__________________________________________________________________

(ii) D decreases:

__________________________________________________________________[2 marks]

(d) If D = 3 m, a = 0.5 mm, and the distance between four fringes is 12 mm, calculate the

wavelength of the light wave formed on the screen.

[2 marks]3

8. Diagram 3.1 and Diagram 3.2 show two arrangements of the apparatus in the laboratory to

study the interference of sound waves.

Diagram 3.1

Diagram 3.2

(a) What type of wave is the sound wave?

______________________________________________________________________[1 mark]

(b) Explain how loud sound and soft sound occurs.

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

[2 marks]

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(c) Observe Diagram 3.1 and Diagram 3.2,

(i) Compare the distance between the two loud speakers, a.

__________________________________________________________________ [1 mark]

(ii) Compare the distance between two consecutive loud sounds, x.

__________________________________________________________________ [1 mark]

(iii) Relate a and x.

__________________________________________________________________ [1 mark]

9. Diagram 4 shows an electromagnetic spectrum.

Diagram 4

(a) (i) What is meant by electromagnetic waves?

_________________________________________________________________[1 mark]

(ii) Give one common characteristics of the components of the electromagnetic spectrum.

_________________________________________________________________[1 mark]

(b) Based on the Diagram 4, give the name and the usage of components P and S.

Component of the electromagnetic waves Applications of the waves

P: ………………………………..

S: ………………………………..

[4 marks]

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(c) Given that the speed of the electromagnetic wave is 3 x 108 ms-1.Find the wavelength of the radio wave which has a frequency of 3.2 kHz.

[2 marks]

Section B

10. Diagram 9.1(a) and Diagram 9.2 (a) show the apparatus set-up for a Young’s double slit experiment, to determine the wavelength of a monochromatic light. Diagram 9.1(b) and 9.2(b) show the fringes formed on the screen for each situation.

Diagram 9.1(a) Diagram 9.1(b)

Diagram 9.2(a) Diagram 9.2(b)

(a) What is meant by monochromatic light?[1 mark]

(b) Using Diagrams 9.1 and Diagram 9.2, compare the distance between the double-slit and the screen, the distance between two successive bright fringes, the number of fringes and the width of fringes.Deduce the relationship between the distance of the double-slit and the screen and the distance between two successive bright fringes.

[5 marks]6

(c) The assembly hall of PERMATApintar College is small in size and produces too much echo. The administrator intends to replace the old building with a new one. The new hall should be able to accommodate at least 800 students and is suitable for holding other activities like concerts.

Suggest modifications that need to be done to the old hall.Using the knowledge on wave characteristics, explain the modifications based on the following aspects:

- The design of the hall- The furnishings in the hall- The sound and lighting systems in the hall

[10 marks]

(d) Explain why strong double-glazed glass is used as walls of the observation tower in an airport.

[4 marks]

11. An echo-sounder on a ship produces a pulse of sound. A fishing boat uses the sound echo to determine the depth of seabed. You are assigned to investigate the suitable characteristics of the waves that could be used to determine the depth of seabed.

Diagram 11.1

(a) State one phenomenon of waves that produces ‘echo’[1 mark]

(b) Radio waves is used to detect the position of an aeroplane and sonar technique is used to detect the shoal of fish below the boat.(i) State the difference between radio waves and sound waves.(ii) Explain why the speed of sound is greater in water than that in air?

[4 marks]

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(c) Table 11.2 shows the specification of five waves P,Q,R,S and T that can be used to determine the position of a shoal of fish.

Name of

waves

Type of waves Frequency/Hz Speeds/ms-1 Penetrating Power

P Transverse High 3 ¿ 108 Low

Q Longitudinal Low 330 Moderate

R Transverse High 330 Low

S Longitudinal High 1500 High

T Transverse Low 3 ¿ 108 High

Table 11.2

You are required to determine the most suitable waves. Study the waves based on the following aspects:

(i) The type of waves transmitted

(ii) The frequency of the waves

(iii) The speed of the waves

(iv) Penetrating power of waves

[10 marks]

(d) (i) If the time taken for the return of the wave is

115 s, calculate the depth of the shoal

of fish below the boat if the speed of sound in water is 1500 ms-1.

(ii) State two other uses of an echo sounder.

[5 marks]

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SKEMA PAPER 2

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