0
question_answer1) Lucas wants to compare the loudness of two sound producing instruments. He uses a sound detector for this purpose. The test will be fair if
question_answer2) The approximate hearing ranges of some species are listed in the given table. Species Hearing range (Hz) Human 20-20 000 Cat 45-60 000 Rabbit 360-40 000 Tuna 50-1 000 Ferret 16-45 000 Bullfrog 100-3 000 The frequency of the sound produced by a flute is 200 Hz. Which of the given species cannot hear this sound?
question_answer3) The hearing ranges of some animals are shown in the given bar graph. Which of the given animals has the ability to hear sounds with the highest pitch?
question_answer4) The given table lists some characteristics of four sounds I, II, III, and IV. Sound Amplitude (cm) Frequency I 1 1 II 2 3 III 3 2 IV 4 2 Which sound has the highest pitch?
question_answer5) Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
question_answer6) A person is sitting 200 metres away from a 20 Hz sound source. What is the time interval at which successive compression pulses from the source reach him?
question_answer7) A sound wave travelling in air has wavelength of\[1.6\times {{10}^{-2}}m.\]If the velocity of sound is 320m/s, calculate the frequency of sound.
question_answer8) If 25 second wave are produced per second, what is the frequency in hertz?
question_answer9) Sound waves travel with a speed of about 330 m/s. What is the wavelength of sound where frequency is 500 Hertz?
question_answer10) A circular disc with 1500 holes in rotating at 720 r.p.m. If a jet of are passes through the hole, the frequency of sound emitted is
question_answer11) The given table lists some characteristics of four sounds I, II, III, and IV. Sound Amplitude (cm) Frequency (Hz) I 1 1 II 3 4 III 2 3 IV 2 4 Which two sounds have the same loudness?
question_answer12) Sound is produced by the vibration of an object. It travels through a medium such as air by forming alternate regions of compression and rarefaction of air molecules. As a sound travels through air, the regions of compression and rarefaction in it can be shown as
question_answer13) Matrix matching (a) Hz (p) Wavelength (b) \[f\times \lambda \] (q) frequency (c) \[\lambda /T\] (r) Velocity (d) meter (s) Amplitude
question_answer14) Statement A: Mechanical Transverse wave can travel through solids & at the surface of liquid only. Statement B: Mechanical Transverse wave can travel through solid, liquid & gases.
question_answer15) Mechanical (elastic ) waves can travel in
question_answer16) The given figure shows four similar sound waves entering four different media of equal thickness, t. The sound wave will emerge first from medium
question_answer17) When Owen strikes two tuning forks with a hammer they produce melodious sounds. He feels that the sound produced by fork I is louder than that produced by fork n. The sound wave produced by fork II is shown in the given figure. Which figure shows the graphical representation of the sound produced by fork I?
question_answer18) Which of the following pairs of sound waves represents sounds of different levels of loudness?
question_answer19) Jim beats two empty drums. The sound waves produced by the drums are shown in the given figure. From the graphical form of the sound waves it can be said that the produced sounds have different
question_answer20) An echo is heard after 0.8 s, when a person fires a cracker 132.8 m from a high building. What is the speed of sound?
question_answer21) A man stands in between two cliffs and explodes a cracker. He hears the first echo after 0.6s and the second echo after 2.4s. Calculate the distance between the cliffs, (speed of sound = 336 m/s)
question_answer22) A dog barks in a park and hears its echo after 0.5 second. If the sound of its bark got reflected by a nearby building, find the distance between the dog and the building. Take the speed of sound in air is 346 m/s.
question_answer23) A ship sends a signal and receives it back from the bottom of the sea after 6s. What is the depth of the sea at that place? (speed of sound in sea water is\[\text{145}0\text{ m}{{\text{s}}^{-\text{1}}}\])
question_answer24) Using the sonar, sound pulses are emitted at the surface, the pulses after being reflected from the bottom are detected, if the time interval from the emission to the detection of the sound pulses is 2 seconds, find the depth of the water. (Taking velocity of sound through water = 1531 m/s)
question_answer25) A sonar device on a submarine send out a signal and receives an echo 5 seconds later. Calculate the speed of sound in water, if the distance of the object from the submarine is 3625 m.
question_answer26) A person fires a gun in front of a building 167m away. If the speed of sound is 334 m/s. Calculate the time in which he hears an echo.
question_answer27) The distance between the observer (source of sound) and wall is 500 m. The observer hear the first echo after 2 sec then velocity of the sound is
question_answer28) A man stands in between two parallel cliffs and fires a gun. Hears two successive echos after 2 second and 4.5 seconds. What is the distance between the two cliffs.
Please Wait you are being redirected....
You need to login to perform this action.You will be redirected in 3 sec
OTP has been sent to your mobile number and is valid for one hour
Your mobile number is verified.