Q161
Open questionIn which medium the speed of sound is maximum at a temperature of around 20°C?
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Physics GK · all questionsSounds waves and Motion
Sounds waves and Motion
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Q162
Open questionWhich one of the following types of radiation has the shortest wavelength?
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Q163
Open questionIf the amplitude or oscillation of a simple pendulum is very small, then its time period of oscillation
1. depends on the length of the pendulum, L.
2. depends on the acceleration due to gravity, g.
3. depends upon the mass of the bob of the pendulum, m.
4. does not depend upon the amplitude of the pendulum, A.
Select the correct answer:
1. depends on the length of the pendulum, L.
2. depends on the acceleration due to gravity, g.
3. depends upon the mass of the bob of the pendulum, m.
4. does not depend upon the amplitude of the pendulum, A.
Select the correct answer:
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Q164
Open questionWhich one of the following statements is not correct?
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Q165
Open questionBats can sense obstacles because they produce
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Q166
Open questionA boy clapped near a rock and after 3 seconds he heard an echo. If the speed of sound is 346 meters sec-1, then what distance is from the boy and the rock?
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Q167
Open questionArrange the following medium - solids, liquids and gases, in descending order of speed of sound through them.
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Q168
Open questionSound waves with frequency below the audible range are called-
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Q169
Open questionSound of frequencies below 20 Hz are called . . . . . . . .
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Q170
Open questionStationary waves are so called because in them
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Q171
Open questionMan cannot tolerate very high sound, what is the highest sound level that human cannot hear-
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Q172
Open questionSound waves travel on following-
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Q173
Open questionSound waves do not travel in
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Q174
Open questionDoppler shift in frequency does not depend upon
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Q175
Open questionThe acronym SONAR stands for:
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Q176
Open questionThe quality or tone of a musical sound produced by a stringed instrument depends on
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Q177
Open questionThe time taken for one oscillation at a point in the medium is called.
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Q178
Open questionWhat waves cannot be transmitted through vacuum?
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Q179
Open questionWhat is called the area of high density of particles in the medium during transmission of sound?
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Q180
Open questionIf a wave completes 40 vibration in 2.5 seconds, then its frequency is:
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