Can humans hear it

Exercise and reference answers

Upper category

AUDIBLE

Lower category

INAUDIBLE

Items

1. Category

   AUDIBLE

   Item

   50 Hz

2. Category

   INAUDIBLE

   Item

   10 Hz

3. Category

   AUDIBLE

   Item

   500 Hz

4. Category

   INAUDIBLE

   Item

   25 kHz

5. Category

   AUDIBLE

   Item

   2000 Hz

6. Category

   INAUDIBLE

   Item

   5 Hz

Instructions

Flip the points: is this frequency audible to humans?

Explanation