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Question
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
Match the Columns
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Solution
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (3) Vibrations in the air |
| (b) Frequency | (4) Measured in Hz |
| (c) Sound level | (5) Decibel |
| (d) Ultrasonic sound | (2) Frequency more than 20000 Hz |
| (e) Infrasonic sound | (1) Frequency less than 20 Hz |
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