HighDip.com
Home
About
Apps
Contact
Games
physics 09 waves
Pg.No.
1
<<
>>
Page 1
Q.1. Name the disturbance,which propagates energy from one place to the other without the transportation of matter?
Q.2. Name the waves which require material medium for their propogation?
Q.3. Name the waves in which the particles of the medium vibrate in the direction of propogation of wave?
Q.4. Waves of springs or sound waves in air are examples of which waves?
Q.5. Name the waves in which the particles of the medium vibrate perpendicular to the direction of propogation of wave?
Q.6. Waves on strings under tension,waves on the surface of water are examples of which waves?
Q.7. Name the waves which can propogate even through the vaccum?
Q.8. Name the waves which do not require material medium for their propogation?
Q.9. Light radio waves,X-rays are examples of which waves?
Q.10. Name the waves which propogate with the velocity of light in vaccum?
Q.11. Name the neutral waves which propogates as transverse waves?
Q.12. Name the waves which contains energy and momentum?
Q.13. Who introduced the concept of electromagnetic waves?
Q.14. Who discovered the electromagnetic waves named as Gamma rays?
Q.15. What is the frequency range of gamma rays?
Q.16. What is the wavelength range of gamma rays?
Q.17. Who discovered the electromagnetic waves named as X-rays?
Q.18. What is the frequency range of X-rays?
Q.19. What is the wavelength range of X-rays?
Q.20. Who discovered the electomagnetic rays named as Ultra-violet rays?
Q.21. What is the frequency range of Ultra-violet rays?
Q.22. What is the wavelength range of Ultra-violet rays?
Q.23. Who discovered the electromagnetic rays named as Visible radiation?
Q.24. What is the frequency range of Visible radiation?
Q.25. What is the wavelength range of Visible radiation?
Q.26. Who discovered the electromagnetic rays named as Infrared rays?
Q.27. What is the frequency range of Infrared rays?
Q.28. What is the wavelength range of Infrared rays?
Q.29. Who discovered the electromagnetic rays named as Short radio waves or Hertz Hertzian waves?
Q.30. What is the frequency range of Short radio waves?
Q.31. What is the wavelength range of Short radio waves?
Q.32. Who discovered the electromagnetic rays named as Long radio waves?
Q.33. What is the frequency range of Long radio waves?
Q.34. What is the wavelength range of Long radio waves?
Q.35. What is the maximum displacement of the vibrating particle on either side from the equlibrium position called as?
Q.36. Name the distance between any two nearest particle of the medium,vibrating in the same phase called as?
Q.37. Write the relation between wavelength,frequency and the velocity of wave?
Q.38. Which longitudinal mechanical waves lie in the frequency range of 20 hertz to 20000 hertz?
Q.39. Which waves are sensitive to human ear?
Q.40. Which waves are generated by the vibrating bodies such as tuning fork, vocal cords?
Q.41. Name the longitudinal mechanical waves having frequencies less than 20 hertz?
Q.42. Which waves are produced by sources of bigger size such as earthquakes,volcano eruptions,ocean waves and by elephants and whales?
Q.43. Name the longitudinal mechanical waves having frequencies greater than 20000 hertz?
Q.44. Which waves cannot be detected by human ear?
Q.45. Which waves can be produced by Galton's whistle or Hartman's generator?
Q.46. Which creature can detect and also produce ultrasonic waves?
Q.47. Which waves are used for sending signals,measuring depth of sea,removing lamp-shoot from the chimneys of factories,in sterlizing of a liquid, cleaning aeroplanes and in ultrasonography?
Q.48. On which factors basically the speed of sound depends?
Q.49. The speed of sound is maximum in?
Q.50. The speed of sound is minimum in?
Q.51. What is the effect of sound on speed and wavelength when it enters from one medium to another?
Q.52. In a medium,the speed of sound is independent of?
Q.53. What is the effect on the sound of speed,if pressure of the medium is either increased or decreased ?
Q.54. What is the effect on the speed of sound,if the temperature of the medium increases?
Q.55. If the temperature is increased by 1degree celcius ,then the speed of sound in air is increased by?
Q.56. In which type of air{humid or dry},the speed of sound is more due to the its less density?
Q.57. Name the amount of energy passing normally per unit area held around that point per source unit time?
Q.58. Write the SI unit of the intensity of the sound?
Q.59. Which characterstic of sound wave is directly proportional to square of amplitude of vibration,square of frequency and density of the medium while inversely proportional to the square of the distance of point from the source?
Q.60. Which term is used to measure the sensation of sound perceived in ear?
Q.61. Write the units of loudness?
Q.62. Which characterstic of sound distinguishes a sharp sound from a dull sound?
Q.63. What is the effect on pitch of sound if frequency increases?
Q.64. Which characterstic of sound enables us to distinguish between sounds produced by two sources having the same intensity and pitch?
Q.65. Which characterstic of sound depends opon number,frequency and relative intensities of overtones?
Q.66. The repetition of sound due to reflection of sound waves is called as?
Q.67. What is the minimum distance between the observer and reflector to hear a echo?
Q.68. Why sound is heard at longer distances in nights than in day?
Q.69. Name the phenomenon in which frequency of imposed periodic force is equal to the natural frequency of a body,the body oscillates with a very large amplitude?
Q.70. Name the phenomenon in which the redistribution of energy at a point due to superposition of two or more sound waves of same frequency?
Q.71. Name the phenomenon in which if there is a relative motion between source of sound and observer,the apparent frequency of sound heard by the observer is different from the actual frequency of sound emitted by the source?
Q.72. When the distance between the source and the observer decreases then apparent frequency will be?
Q.73. Name the ratio of speed of sound source to the speed of sound in the same medium under the same condition of temperature and pressure?
Q.74. If mach number is greater than one then the body is called as?
Q.75. If mach number is greater than five then the body is called as?
Q.76. If mach number is less than one then the body is said to be?
Q.77. If body moving with supersonic speed in air leaves behind it a conical region of disturbance which spread continously,such a disturbance is called as?
Q.78. When a motor boat in a sea travels faster than sound,then waves just like shock waves are produced on the surface of water are called as?
Q.79. SONAR stands for?
Q.80. What is used to measure the depth of sea, to locate the enemy submarines and shipwrecks?
<<
>>