Welcome to your Superposition of Waves(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. In young double slit experiment, the wavelength of incident beams should bezerosamedifferentopposite2. Splitting of white light in to constituent colors is calledrefractiondiffractionreflectiondispersion3. 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/3radπ/2rad2π/5radπ/3rad4. Extra distance travelled by one of waves compared with other is calledphase differencepath differencedisplacementpath5. Grating element is equal tonλ/sinθcosθsinθnλ6. 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?40m/s3/4 m/s30m/s3π/2 m/s7. Constructive interference happens when two waves areout of phasein phasezero amplitudein front8. 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?Nnn/NN/n1/Nm9. From double slit experiment, the quantities to be measured areslit separationall of the aboveslit-to-screen distancefringe separation10. A speaker producing sound of frequency 2500 Hz is placed at the open end of a closed pipe containing a gas.As the piston is moved along the pipe, a series of 6 loud sounds was heard. The first loud sound was observed when the piston was 4.0 cm away from the open end, and the sixth loud sound was observed when the piston was 37 cm away from the open end. What is the speed of sound in the gas?270 m/s370 m/s400 m/s330 m/s11. For a wave propagating in a medium, identify the property that is independent of the others.All these depend on each otherFrequencyWavelengthsVelocity12. 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.Points equidistant from N2 vibrate with the same frequency and the same amplitude.All points on the string vibrate with the same amplitude.Points equidistant from N2 vibrate with the same frequency and in phase.13. If equation of a sound wave isy=0.0015sin(62.8x+314t)Then its wavelength will be ____0.1unit0.3unit2unit0.2units14. Which of the following is always true for a stationary wave?All particles vibrate in simple harmonic motion with the same frequency as the waveThe particles in the wave oscillate perpendicularly to the direction of wave travelAll particles have the same amplitude.No energy is transferred from one end of the wave to the other.15. Visible of light has a wavelength of6 e3 m5 e-7 m3 e8 m4 e4 m16. With diffraction grating, the angles aresmallzerogreaterclose to zero17. Coherent sources emit waves that haveincreasing phase differencevarying phase differencesconstant phase differencedecreasing phase difference18. A wave is diffracted as it passes through an opening in a barrier.The amount of diffraction that the wave undergoes depends on both theamplitude and frequency of the incident wave.amplitude of the incident wave and the size of the openingwavelength and speed of the incident wave.wavelength of the incident wave and the size of the opening.19. A string is stretched under constant tension between fixed points X and Y. The solid lie in the diagram shows a standing (stationary) wave at an instant of greatest displacement. The broken line shows the other extreme displacement.Which one of the following statements is correct?The distance between P and Q is one wavelengthThe string at P' and Q' will next move in opposite directions to one another otherA short time later, the string at R will be displacedAt the moment shown, the energy of the standing wave has both kinetic energy and potential energy20. 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?Reduce the width of each slit.Use a double-slit where the slits are further apart.Use orange-coloured light.Move the double-slit closer to the screen.21. For listening radio in cars, external radio aerials are used becauseradio waves require a medium to propagateradio waves cannot pass through windowradio waves have longer wavelengthradio waves have shorter wavelength22. Two transverse waves overlap. Crests overlap with crests. Troughs overlap with troughs. The waves areOut-of-synchronicityIn-phaseOut-of-phaseIn-synchronicity23. Wavelength of an incident light when it is incident normally on a diffraction grating having 3000 lines per centimeter angular separation is 10° is500 nm650 nm580 nm600 nm24. Which is different from others by units?Loudness of soundMechanical equivalentPoisson’s ratioPhase difference25. The mercury spectrum contains two intense yellow lines with wavelengths of 577.0 nm and 579.1 nm respectively. Light from a mercury lamp is incident normally on a diffraction grating ruled with 4300 lines per centimetre. To distinguish the two yellow lines clearly, it is desirable that there should be an angular separation of at least 0.30° between the two lines. Which order of diffraction can be used?5 th order4 th order2 nd order3 rd order26 out of 25Time is Up!