question_answer1) Is an oscillation a wave? Give reason.
question_answer2) A wave transmits momentum. Can it transfer angular momentum?
question_answer3) Frequency is the most fundamental property of a wave. Why?
question_answer5) How is energy transmitted in wave motion?
question_answer7) What is the source of electromagnetic waves?
question_answer8) Why are the longitudinal waves also called pressure waves?
question_answer9) What is a non-dispersive medium? Give an example.
question_answer10) Can transverse waves be produced in air?
question_answer12) How can we distinguish experimentally between longitudinal and transverse waves?
question_answer14) What is the difference between wave velocity and particle velocity?
question_answer15) We always see lightning before we hear thundering. Why?
question_answer16) What does cause the rolling sound of thunder?
question_answer17) Two astronauts on the surface of the moon cannot talk to each other. Why?
question_answer18) Why explosions on other planets cannot be heard on the earth?
question_answer20) Why does sound travel faster in solids than in gases?
question_answer25) Sound travels faster on a rainy day than on a dry day. Why?
question_answer27) Explain why sound travels faster in warm air than cool air?
question_answer28) What is the nature of thermal changes in air when sound propagates through air?
question_answer29) What characteristics of a medium determine the speed of sound waves through it?
question_answer30) If we set our watch by the sound of a distant siren, will it go slow or fast?
question_answer31) What will be the velocity of sound in a perfectly rigid rod? Give reason.
question_answer40) Sound can be heard over long distances on a rainy day. Why?
question_answer41) Why sound can be heard more distinct at a greater distance over water surface?
question_answer42) What is a periodic wave function?
question_answer43) What is a harmonic wave function?
question_answer45) Sometimes, in a stringed instrument, a thick wire is wrapped by a thin wire. Why?
question_answer46) Why are stationary waves called so?
question_answer47) When are stationary waves produced?
question_answer50) What is difference between a tone and a note?
question_answer52) Why are there so many holes in a flute?
question_answer66) Why is a sonometer box provided with holes?
question_answer69) As in sound, can beats be observed by two light-sources?
question_answer72) Can we hear beats when sounds from two different sources are heard together?
question_answer73) Does Doppler's effect apply to only sound waves?
question_answer80) Explain why we cannot hear an echo in a small room?
question_answer81) What do you mean by reverberation? What is reverberation time?
question_answer82) What is the difference between an echo and a reverberation?
question_answer83) The reverberation time is larger for an empty hall than in a crowded hall. Why?
question_answer84) Thick and long curtains are preferred in a big hall. Why?
question_answer86) What are infrasonics and ultrasonics?
question_answer87) How do we identify our friend from his voice while sitting in a dark room?
question_answer88) What determines the quality of sound?
question_answer90) What do you understand by the fidelity of an instrument?
question_answer91) What is the factor on which pitch of a sound depends?
question_answer94) Why is the sound produced in air not heard by a person deep inside the water?
question_answer98) All harmonics are overtones but all overtones are not harmonics. How?
question_answer108) Distinguish between transverse and longitudinal waves.
question_answer109) What is red shift? What does it indicate?
question_answer112) Differentiate between Stationary waves and Progressive waves.
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