Welcome to your Superposition of Waves(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. A boat at anchor is rocked by waves, whose crests are 100m apart and velocity is 25m/s. The boat bounces up once in every ____ 4s 2500s 75s 0.25s 2. When two waves meet up, their displacements destruct each other cancel out subtract down ad up 3. Splitting of white light in to constituent colors is called dispersion reflection refraction diffraction 4. Two waves with phase difference 180° have resultant of amplitude zero one same as the single wave doubles the single wave 5. If two sound waves having a phase difference of 60°, then they will have a path difference of _____ ʎ/3 3ʎ ʎ ʎ/6 6. The superposition of two waves creates Light Interference Higher frequencies Compressions 7. If equation of a sound wave isy=0.0015sin(62.8x+314t)Then its wavelength will be ____ 0.1unit 2unit 0.2units 0.3unit 8. Principle of superposition can be applied to radio waves sound waves all of the above EM waves 9. A diffraction grating with N lines per metre is used to deflect light of various wavelengths λ. The diagram shows a relation between the deflection angles of θ for different values of λ in the nth order interference pattern.What is the gradient of the graph? Nn N/n 1/Nm n/N 10. Which is different from others by units? Phase difference Poisson’s ratio Loudness of sound Mechanical equivalent 11. A transverse wave passes through a string with the equationy=10sinπ(0.02x-2t)Where x is in metres and t in seconds. What is the maximum velocity of the particles in wave motion? 63m/s 78m/s 100m/s 121m/s 12. Fringes are referred to as normal points maxima nodes minima 13. The diagram shows a string with with ends P and T fixed. The string is made to vibrate transversely so that P, R and T are the only points on the string which are nodesThe vibrations of the two points Q and S, shown on the string, have the same amplitude and differ in phase by 90° the same amplitude and are in phase the same amplitude and differ in phase by 180° different amplitudes and are in phase 14. A stationary wave is set up on a stretched string XY as shown.At which point(s) will the oscillation be exactly in phase with that at P? 3 only 2 only 1 and 2 only 1, 2 and 3 15. A double-slit interference of green-coloured light was set up as shown and interference fringes are formed on the screen.Which change would increase the distance between adjacent fringes? Use a double-slit where the slits are further apart. Use orange-coloured light. Reduce the width of each slit. Move the double-slit closer to the screen. 16. The plane wave is described by the equationy=3cos(x/4-10t-π/2),Where c is in meters and t in seconds. The maximum velocity of the particles of the medium due to this is? 30m/s 40m/s 3π/2 m/s 3/4 m/s 17. For destructive interference, the path difference is whole number of wavelengths odd number of half wavelengths even whole number of wavelength even number of half wavelengths 18. A double-slit interference experiment is set up as shown.Fringes are formed on the screen which is 40.0 cm away. The distance between the slits is 9.0 cmapart. The microwave source has a wavelength of 2.0 cm and intensity of I.What is the resultant intensity at X? zero l 4l 2l 19. The diagram shows a standing wave on a string. The standing wave has three nodes N1, N2 and N3.Which statement is correct? All points on the string vibrate in phase. All points on the string vibrate with the same amplitude. Points equidistant from N2 vibrate with the same frequency and the same amplitude. Points equidistant from N2 vibrate with the same frequency and in phase. 20. The waves, in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion, is known as ______ Transverse waves Propagated waves Longitudinal waves Magnetic waves 21. The equation of wave is given byy=10sin(2πt/30+α)If the displacement is 5cm at t=0, then the total phase at t=7.5s will be ______ 2π/3rad π/2rad 2π/5rad π/3rad 22. For a wave propagating in a medium, identify the property that is independent of the others. Frequency All these depend on each other Wavelengths Velocity 23. The waves produced by a motor boat sailing in water are __________ Longitudinal Longitudinal and transverse Transverse Stationary 24. For listening radio in cars, external radio aerials are used because radio waves have shorter wavelength radio waves cannot pass through window radio waves have longer wavelength radio waves require a medium to propagate 25. Coherent sources emit waves that have constant phase difference increasing phase difference decreasing phase difference varying phase differences 1 out of 25 Time is Up! Time's up