Questions :-

1. In humans, sound is produced by _______________
(a) Voice box
(b) Music box
(c) Juke box
(d) None of these

2. Name the form of energy that is produced by producing vibration in an object.
(a) Wave
(b) Sound
(c) Heat
(d) None of these

3. __________ cannot move through vacuum.
(a) Wave
(b) Sound
(c) Heat
(d) None of these

4. Sound waves are _______________ waves.
(a) Longitudinal waves
(b) Transverse waves
(c) Both of them
(d) None of these

5. _________ is measure of number of oscillations per second.
(a) Time period
(b) Hertz
(c) Frequency
(d) None of these

6. Frequency is measured in ___________
(a) Coulomb
(b) Hertz
(c) Decibel
(d) Candela

7. Loudness of sound is measured in ____________
(a) Coulomb
(b) Hertz
(c) Decibel
(d) Candela

8. Higher frequency gives _________ pitch.
(a) Higher
(b) Lower
(c) Medium
(d) None of these

9. Higher amplitude gives _________ sound.
(a) Smaller
(b) Louder
(c) Unchanged
(d) None of these

10. What is the frequency range of audible sound?
(a) 40 – 40,000 Hz
(b) 60 – 60,000 Hz
(c) 80 – 80,000 Hz
(d) 20 – 20,000 Hz