Question 11 MarkYou and your friend are on the moon. Will you be able to hear any sound produced by your friend?View full question & answer→
Question 21 MarkHow does the sound produced by a vibrating object in a medium reach your ears?View full question & answer→
Question 41 MarkName the physical quantity whose SI unit is ‘hertz’. Define.View full question & answer→
Question 51 MarkThrough which medium sound travels faster, iron or water? Give reason.View full question & answer→
Question 81 MarkName the device which is used to produce sound in laboratory experiments.View full question & answer→
Question 91 MarkWhat name is given to those air-crafts which fly at speeds greater than the speed of sound?View full question & answer→
Question 101 MarkState one observation from every day life which shows that sound travels much more slower than light.View full question & answer→
Question 111 MarkA stone is dropped on the surface of water in a pond. Name the types of waves produced.View full question & answer→
Question 121 MarkName the type of waves produced when a tuning fork is struck in air.View full question & answer→
Question 131 MarkWhat type of waves are illustrated by the movement of a rope whose one end is moved up and down?View full question & answer→
Question 151 MarkWhat is Reverberation?AnswerThe repeated reflection that results in persistent sound is called reverberation. View full question & answer→
Question 161 MarkDifferentiate tone from note.AnswerTone : A sound of single frequencyNote : A collection of tones.View full question & answer→
Question 171 MarkDefine : Intensity.AnswerIntensity is defined as the amount of energy per unit time perpendicular to the direction of propagation of the wave.View full question & answer→
Question 181 MarkName the distinguishing factors of sound.Answer1. Loudness, 2. Pitch, 3. Timbre (or) quality. View full question & answer→
Question 191 MarkName the five characteristics of’a sound wave. ‘Answer1. Amplitude, 2. Frequency, 3. Time period, 4. Wavelength, 5. Velocity or speed.View full question & answer→
Question 201 MarkDistinguish between compression and rarefactions.AnswerCompression :Compressions are the regions where particles are crowded together.Rarefaction :Rarefactions are the regions of low pressure where particles are spread apart.View full question & answer→
Question 211 MarkWhat is a wave?AnswerThe disturbance which is carried forward in a medium is called wave.View full question & answer→