1. What is the relationship between, wave velocity, Frequency and wavelength for a periodic wave.
2. A source of wave produces 40 crests and 40 troughs in 0.4 second. Find the frequency of the wave.
3. A human heart on an average is found to beat 75 times a minute. Calculate its frequency.
4. On what factors the speed of sound in a medium depends?
5. In which of the following Solids, Liquids and Gases, the speed of sound is the highest and lowest?
6. You can hear easily the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Give reason.
7. Though lightening and thunder are produced together, the flash of lightning is seen much before the thunder is heard?
8. What are the characteristics of sound?
9. What is meant by loudness of sound?
10. What is meant by the pitch of sound? On which factor the pitch of a sound depend.
11. What is meant by the quality of sound?
12. Which wave property determines (a) Loudness (b) Pitch?
13. Which should have a higher pitch: Guitar or Car horn?
14. The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
2. A source of wave produces 40 crests and 40 troughs in 0.4 second. Find the frequency of the wave.
3. A human heart on an average is found to beat 75 times a minute. Calculate its frequency.
4. On what factors the speed of sound in a medium depends?
5. In which of the following Solids, Liquids and Gases, the speed of sound is the highest and lowest?
6. You can hear easily the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Give reason.
7. Though lightening and thunder are produced together, the flash of lightning is seen much before the thunder is heard?
8. What are the characteristics of sound?
9. What is meant by loudness of sound?
10. What is meant by the pitch of sound? On which factor the pitch of a sound depend.
11. What is meant by the quality of sound?
12. Which wave property determines (a) Loudness (b) Pitch?
13. Which should have a higher pitch: Guitar or Car horn?
14. The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
