Quiznetik
Sound | Set 1
1. Sound is produced by
A. Non-Vibrating objects only
B. Vibrating and non- vibrating objects
C. Vibration has no relation to sound
D. Vibrating objects only
Correct : D. Vibrating objects only
2. Sound cannot travel through
A. vacuum
B. air
C. water
D. solids
Correct : A. vacuum
3. Vibration is also known as
A. Vibratory motion
B. Translatory motion
C. Oscillatory motion
D. None of these
Correct : C. Oscillatory motion
4. Frequency is expressed in
A. Kilometer
B. Hertz
C. gram
D. Degree centigrade
Correct : B. Hertz
5. The number of oscillations per second is called
A. Amplitude of oscillation
B. Pitch of oscillation
C. Frequency of oscillation
D. None of the bove
Correct : C. Frequency of oscillation
6. Above _____ dB the sound becomes physically painful
A. 60
B. 40
C. 120
D. 80
Correct : D. 80
7. When the amplitude of vibration is large, sound produced is
A. No sound
B. feeble
C. loud
D. No relation between amplitude and sound
Correct : C. loud
8. Human can hear sound in the range of
A. 200-2000 Hz
B. 20-20,000 Hz
C. 2-20000 Hz
D. 2000-200000 Hz
Correct : B. 20-20,000 Hz
9. An ultrasound equipment works at frequency
A. Higher than 20,000 Hz
B. Higher than 10,000 Hz
C. Lower than 20,000 Hz
D. Lower than 10,000 Hz
Correct : A. Higher than 20,000 Hz
10. Voice of man is heavy compared to a woman because
A. Female vocal cord is longer
B. Male vocal cord is shorter
C. Male vocal cord is longer
D. The concept is not related
Correct : C. Male vocal cord is longer