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question_answer1) Which one of the following is an example of mechanical wave?
question_answer2) If a vibrator strikes the water 10 times in one second, then the frequency of wave is ______.
question_answer3) The distance between a compression and the next rarefaction of a longitudinal wave is _______.
question_answer4) What is the unit of wavelength?
question_answer5) The technique used by bats to find their way or to locate food is __.
question_answer6) An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the sending and receiving of the wave is 1.6 s. What is the depth of the sea, if the velocity of sound in the seawater is 1400 m/s?
question_answer7) The relation between wave velocity V, frequency 'f ', and wavelength T is____.
question_answer8) The frequency of a wave travelling at a speed of 500 ms1 is 25 Hz. Its time period will be ____.
question_answer9) The eardrum is a:
question_answer10) The term that describes how brain interprets the frequency of a sound is called:
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