Fizik Monthly Test

7/29/2019 Fizik Monthly Test

1/9PEPERIKSAAN DIAGNOSTIK AKADEMIK

BULAN MAC 2013 - PTSMI Page 1

Nama Pelajar : .

PUSAT TUISYEN SERI MINDA INTELEK

TAMAN MOUNT AUSTIN

PEPERIKSAAN DIAGNOSTIK AKADEMIK PERTAMA

(MAC 2013)

PHYSICS

FORM 5

2 HOUR

ARAHAN AM :-

1. Answer all questions.

2. This question paper consists of :-

SECTION A - OBJECTIVE - 10 MARKS

SECTION B - STRUCTURE - 30 MARKS

SECTION C - ESSAY - 10 MARKS


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PEPERIKSAAN DIAGNOSTIK AKADEMIK


SECTION A

10 MARKS

1. Which statement is correct when water waves are reflected by a reflector?A. The velocity of the water waves before and after reflection are the same.B. The wavelength of water becomes longer after reflection.

C. The amplitude of water waves becomes smaller after reflection.

2. The diagram shows a wave.

The speed of the wave is 4.0ms-1. The distance of 5 consecutive crests is 8m.what is the

frequency of the wave?A. 0.4 Hz B. 05.HzC. 2.0Hz D. 2.5 Hz

3. Which physical quantity of a wave changes when the wave is reflected?A. Speed B. FrequencyC. Wavelength D. Direction of wave propagation


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7


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9

10


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SECTION B

30 MARKS

QUESTION 1

Diagram shows a simple pendulum which consists of a bob of mass 40.0 g at the end of a light inelastic string of length20.0cm. The pendulum makes 20 complete oscillations in 5.0 s.

(a) By using the letters A,B and C in the diagram above state the [2 marks]

(i) equilibrium position

(ii) the meaning of period

(b) What is the frequency of the oscillations of the pendulum ? [1 marks]

(d) What happens to the frequency of the oscillations of the pendulum when the length of thependulum is 80.0 cm ? [2 marks]

(e) After a while the pendulum stops to oscillate . Explain why? [2 marks]

(f) Plot a graph displacement time to show why the pendulum stops to oscillate. [2 marks]


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QUESTION 2

Diagram 2.1 shows the initial reading of a stopwatch at the beginning of an experiment. The stopwatch was used tomeasure the time for 20 complete oscillations made by a simple pendulum of length, l. Diagram 2.2 shows the readingof the stopwatch at the end of the experiment.

Diagram 2.1 Diagram 2.2

(a) (i) State the type of error shown in Diagram 2.1. [1 mark]

(ii) What is the actual time taken for the pendulum to complete 20 oscillations? [1 mark]

(b) (i) Find the period of one complete oscillation, T, for this pendulum. [1 mark]

(ii) The relationship between the length, l, and the period, T, of a simple pendulum is given by the equation,

Using the value ofTobtained in (b)(i), calculate the length, l, of the pendulum.[Given that = 3.142 and g= 10 m s-2] [2 marks]


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QUESTION 3Diagram 3.1 shows the arrangement of the apparatus for an experiment to study a wave phenomenon.Diagram 3.2 shows the wave pattern formed on the screen when a plane waves pass through the gap.


(a) Name the wave phenomenon studied in this experiment. [1 mark]

(b) Observe Diagram 3.2, Compare the wavelengths and wave patterns of the waves before andafter they pass through the gap.Wavelength: [1 mark]

Wave patterns: [1 mark]

(c) (i) State any change to the amplitude of the waves before and after they pass throughthe gap. [1 mark]

(ii) Explain the answer in (c)(i). [1 marks]

(d) The gap is made wider.(i) What is the effect on the waves passing through the gap? [1 marks]

(ii) In the space below draw the wave patterns after it pass through the wider gap. [2 marks]


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QUESTION 4Diagram 4.1 shows a water waves passing through a log that floats in water. Diagram 4.2 shows a student standing at onecorner of a building at B who can hear the sound from a loudspeaker at A.


(a) Based on Diagram 6.1 and Diagram 6.2,(i) What happens to the wave after passing round the log and the corner of the building? [1 mark]

(ii) What happens to the amplitude of the waves after passing round the log and the corner [2 mark]of the building?

(iii) Name the wave phenomenon that is related to Diagram 6.1 and Diagram 6.2. [1 mark]

(iv) What will happen to the speed of the water waves after passing through the log? [1 mark]

(b) Refering to Diagram 6.1, what will happen to a floating object that is placed at [2 marks](i) P?

(ii) Q?

(c) Name one other wave phenomenon that occurs in Diagram 6.1. [1 mark]


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SECTION C

10 MARKS

QUESTION 5

Diagram 5 shows on coming sea wave approaching a harbour.

Table 1 shows the four characteristics of harbour models, S, T, U, and V and a depth of water location that can beused to build a suitable and safety harbour.

You are required to determine the most suitable and safety model of harbour. Study the specifications of all the fourharbour models based on the following aspects.

- The location of the wall barrier- Water depth- Gap between the wall barriers- Size of the wall barriers base

Explain the suitability of the aspects. Justify your choice . [10 Marks]

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