Physics-
General
Easy
Question
A sound wave of wavelength 32cm enters the tube as shown in the figure Then the smallest radius ‘r’ so that a maximum of sound is heard at detector is
- 7 cm
- 14 cm
- 21 cm
- 28 cm
The correct answer is: 28 cm
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Two stereo speakers are separated by a distance of 2.4 m A person stands at a distance of 3.2 m as shown directly in front of one of the speakers The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)
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