Medium
Which one is not correct?
Explanation
Explanation
Check each statement: loud sounds above 80 dB can indeed be painful, and loudness genuinely depends on amplitude — both correct. A drum does vibrate at a relatively low frequency, producing a deep sound — also correct. However, a lion's roar is actually deep and low-pitched (not high-pitched), so the statement 'Lion makes a high pitched roar' is factually wrong. The incorrect statement is option (3).
PRO TIP
Re-check your working by substituting the answer back into the original question.