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GCSE Physics - 1
Waves
Sound wave is an example of which type of wave ?
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Longitudinal |
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Transverse |
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Invisible |
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Infrared |
Four sets of circular waves with four different wave sources interfere with each other. The maximum amplitude of first wave is 20 mm, that of second wave is 15 mm, that of third wave is 25 mm and that of fourth is 10 mm. What will be the amplitude of the largest possible wave due to interference and what will be the amplitude of the smallest possible wave ?
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Maximum 25 mm and minimum 10 mm |
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Maximum 50 mm and minimum 5 mm |
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Maximum 70 mm and minimum 0 mm |
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Maximum 17.5 mm and minimum 17.5 mm |
Define Refraction Index
| when a ray of light hits an object which it cannot pass through it bounces offthe object at a different angle to which it hit it. (by victoria) |
| angle of refraction / angle of incidence (by Goku) |
| n=sini/sinr (by MUHAMMAD ZUBAIR) |
| its the difference of speed of light due to the different media. (by bahija) |
| Change in direction of light when it passes through a material of differing density (by SurferGal) |
| refraction is the change in the direction of a wave. (by Anon) |
| light or water is bended from going from one material to another that have different densities (by Anon) |
| the angle at which a wave is refracted when changing medium (by Anon) |
A wave front XY is traveling through medium M1. It reaches refracting surface AB of medium M2 at an angle. Point X on the straight wavefront XY is the first to reach the surface AB. At that moment point Y is 10 mm away from its predicted point of impact on surface AB. When point Y of the straight wavefrontXY reaches surface AB, secondary wavefront due to point X has travelled inside medium M2 and has reached point X2. The distance between point X and X2 is 8 mm. Based on this observation please indicate the correct answer from the following
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The wave travels faster in medium M1 when compared to medium M2 |
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The wave travels faster in medium M2 when compared to medium M1 |
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The wave travels at the same speed in medium M1 and M2 |
Based on the observations listed in above question, please indicate the correct answer
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Medium M1 is denser than Medium M2 |
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Medium M2 is denser than Medium M1 |
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Medium M1 and M2 have the same density |
When a sound system with five speakers are installed in a room, three speakers are installed at the front of the room (left corner, middle and right corner resp.), two at the back of the room (left corner and right corner respectively). The speakers are adjusted such a way that a person seating towards the back of the room, in a regular seating location gets to hear the best quality of sound produced from the sound system. Whereas the locations away from the normal seating positions do not receive the best quality of sound. Please indicate which of the following wave related phenomenon is the reason for the above observation ?
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Polarization |
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Interference |
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Diffraction |
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Refraction |
Two waves of the same frequency are traveling in the same direction. Wave 1 is traveling at a speed greater than Wave 2. Which of the following is true ?
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Wave 1 has a shorter wavelength than Wave 2 |
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Wave 1 has a longer wavelength than Wave 3 |
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Wave 1 and Wave 2 have same wavelengths |
Which of the following is the correct answer ?
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After diffraction the wavelength and the frequency of the wave changes, but the speed remains same |
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After diffraction the speed and the wavelength of the wave changes but the frequency remains same |
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After diffraction the speed and the frequency of the wave changes but the wavelength remains same |
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After diffraction the speed, frequency and the wavelength remains same |
