CTET 2 Math and Science 3 Jan 2022 Paper
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Question : 73 of 150
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Read the following statement carefully and choose the correct option
Assertion (A) : Ultra sound is inaudible to humans
Reason (R) : The human ear has a range of hearing between 20 Hz to 20,000 Hz
Assertion (A) : Ultra sound is inaudible to humans
Reason (R) : The human ear has a range of hearing between 20 Hz to 20,000 Hz
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