Statement – I : If frequency of sound is less than 20 Hz, then they are called infrasonic sounds.
Statement – I : If frequency of sound is less than 20 Hz, then they are called infrasonic sounds.
Statement – II : If frequency of sound is more than 20 Hz, then they are called infrasonic sounds.
A) Both the statements I & II are true.
B) Statement -1 is true and statement -II is false.
C) Statement -1 is false and statement – II is true.
D) Both the statements I & II are false.
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