Malaysia SPM Form 5 Physics: Wave

1.1 Oscillation
1.2 Understanding Wave
1.3 Understanding Wave - Calculation
2.1 Wave Phenomena - Reflection and Refraction
2.2 Wave Phenomena - Difraction and Interference
3.1 Sound Wave

4.1 Electromagnetic Wave
4.2 Light Wave
4.3 Light Wave - Calculation

Understanding Wave - Calculation Question

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1. Figure above shows the pattern of wavefronts produced by bob dipper at a frequency of 25Hz in a ripple tank. Find the speed of the wave.
Choice 1 5m
Choice 2 0.05m
Choice 3 1.25m
Choice 4 0.3m

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2. In a ripple tank experiment, waves are produced at the rate of 24 waves per second and the distance between 5 successive ripples is 20cm. The experiment is repeated by changing the frequency of the vibrator, and the new distance between 5 successive ripples is 12cm. What is the new frequency of the vibrator?
Choice 1 100Hz
Choice 2 60Hz
Choice 3 20Hz
Choice 4 40Hz

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3. The end coil of a slinky spring is connected to a motor which is moving forward and backward at a frequency of 4Hz. Given that the distance between four successive rarefactions is 60cm. What is the speed of the speed of wave produced?
Choice 1 2.4 ms-1
Choice 2 0.8 ms-1
Choice 3 2.5 ms-1
Choice 4 1.0 ms-1

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4. A sound wave of wavelength 4mm travels in air at a frequency of 6.0 × 104 Hz. Find the time take by the wave to travel 60m.
Choice 1 1 s
Choice 2 0.5 s
Choice 3 0.25 s
Choice 4 0.8 s

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Question 5, 6 and 7 are based on the diagram information provided below.

The displacement-distance graph in the figure above shows the motion of a transverse wave. The source of the wave produces 8 complete waves in 2 seconds.

5. Find the amplitude of the wave
Choice 1 5 cm
Choice 2 -5cm
Choice 3 14cm
Choice 4 7cm

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6. Find the wavelength of the wave
Choice 1 4cm
Choice 2 8cm
Choice 3 14cm
Choice 4 16cm

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7. Find the speed of the wave
Choice 1 7 cms-1
Choice 2 14 cms-1
Choice 3 16 cms-1
Choice 4 32 cms-1

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electromagnetism notes