Podcast
Questions and Answers
When a key of a mechanical piano is struck gently and then struck again but much harder, what happens to the sound produced?
When a key of a mechanical piano is struck gently and then struck again but much harder, what happens to the sound produced?
- The pitch of the sound remains the same
- The sound becomes louder and the pitch increases (correct)
- The sound becomes quieter but the pitch increases
- The sound becomes louder but the pitch decreases
What is a note in terms of sound?
What is a note in terms of sound?
- Always unpleasant to listen
- A single frequency
- A mixture of several frequencies (correct)
- A mixture of two frequencies only
What is the main focus of NCERT Exemplar Solutions for Class 9 Science Chapter 12 - Sound?
What is the main focus of NCERT Exemplar Solutions for Class 9 Science Chapter 12 - Sound?
- The range of hearing
- The production of sound
- The application of ultrasound (correct)
- Sound propagation
What is the range of hearing?
What is the range of hearing?
What types of questions are included in the NCERT Exemplar Solutions for Class 9 Science Chapter 12 - Sound?
What types of questions are included in the NCERT Exemplar Solutions for Class 9 Science Chapter 12 - Sound?
How are ultrasound waves applied in NCERT Exemplar Solutions for Class 9 Science Chapter 12 - Sound?
How are ultrasound waves applied in NCERT Exemplar Solutions for Class 9 Science Chapter 12 - Sound?
What type of waves are used in SONAR?
What type of waves are used in SONAR?
What happens to the sound in the second case?
What happens to the sound in the second case?
In which medium does sound travel?
In which medium does sound travel?
How do we change feeble sound to loud sound?
How do we change feeble sound to loud sound?
In the given curve, where is half the wavelength?
In the given curve, where is half the wavelength?
What kind of sound does an earthquake produce before the main shock wave begins?
What kind of sound does an earthquake produce before the main shock wave begins?
Who can hear infrasound?
Who can hear infrasound?
What does a sitarist adjust before playing in a musical concert?
What does a sitarist adjust before playing in a musical concert?
What is the effect of adjusting tension and plucking the string suitably by a sitarist before playing in a concert?
What is the effect of adjusting tension and plucking the string suitably by a sitarist before playing in a concert?
What factor does loudness depend on?
What factor does loudness depend on?
