Options:
- A. 1.61 ms-1
- B. 61.0 ms-1
- C. 0.61 ms-1
- D. 2.00 ms-1
View Answer
C. 0.61 ms-1
Physics
The velocity of sound in air would become double than its velocity at 0
Options:
- A. 313
- B. 586
- C. 819
- D. 1172
View Answer
C. 819
On loading the prong of a tuning form with wax its frequency____________________?
Options:
- A. increases
- B. decreases
- C. remains unchanged
- D. may increase or decrease
View Answer
B. decreases
Ultrasonic have__________________?
Options:
- A. frequency in the audible range
- B. frequency is greater than 20 kHz
- C. frequency lower than 20 Hz
- D. all of above
View Answer
B. frequency is greater than 20 kHz
The normal ear is the most sensitive in the frequency range___________________?
Options:
- A. 20000 to 30000 hertz
- B. 10 to 20 hertz
- C. 2000 to 4000 hertz
- D. 6000 to 8000 hertz
View Answer
C. 2000 to 4000 hertz
The number of beats produced per second is equal to____________________?
Options:
- A. the sum of the frequencies of two tuning forks
- B. the difference of the frequencies of two tuning forks
- C. the ratio of the frequencies of two tuning forks
- D. the frequency of either of the two tuning forks
View Answer
B. the difference of the frequencies of two tuning forks
The velocity of sound in air would become double than its velocity at 0
Options:
- A. 313
- B. 586
- C. 819
- D. 1172
View Answer
C. 819
Silence zone takes place due to____________________?
Options:
- A. constructive interference
- B. destructive interference
- C. beats
- D. resonance
View Answer
B. destructive interference
The periodic alternation of sound between maximum and minimum loudness are called___________________?
Options:
- A. silence zone
- B. interference
- C. beats
- D. resonance
View Answer
C. beats
When the source of sound moves away form a stationary listener then ______________ occurs?
Options:
- A. an apparent increase in frequency
- B. an apparent decrease in frequency
- C. an apparent decrease in wavelength
- D. no apparent change in frequency
View Answer
B. an apparent decrease in frequency