(A) Justify the given statements -
OR
A boy hits a drum hard and then softly with the same frequency. His friend notices that the first sound is louder than the second.
(1) (A) Justify the given statements -
(a) The sound of a bird differs from the roar of a lion.
(b) The police use high frequency whistles for the dogs.
(c) We cannot hear someone walking on the carpet.
(B) "Lightning and thunder take place in the sky at the same time and at the same distance from us. Lightning is seen earlier and thunder is heard later." Explain.
(2) A boy hits a drum hard and then softly with the same frequency. His friend notices that the first sound is louder than the second.
(a) Give the reason for this difference.
(b) Will the pitch of both sounds be the same or different? Give a reason.
(c) How does the amplitude of vibration affect loudness?
(d) Define frequency.
(e) If the boy triples the amplitude, what happens to the loudness of sound?