Question

A boy plays a musical note on a piano. Next he plays another note of higher pitch to make it louder. Which of the following is true of the second sound when compared with the first?

• A. Frequency of second sound - Smaller , Amplitude of second sound - Smaller
• B. Frequency of second sound - Smaller , Amplitude of second sound - Larger
• C. Frequency of second sound - Larger , Amplitude of second sound - Larger
• D. Frequency of second sound - Larger , Amplitude of second sound - Smaller

Answer 1

The correct option is C

Frequency of second sound - Larger , Amplitude of second sound - Larger

Pitch is the rate of vibrations producing it. A higher note on the guitar can be produced by shortening the length of guitar chords. Higher pitch means larger frequency and smaller chords means larger amplitude