A. matter waves
B. electromagnetic waves
C. carrier waves
D. mechanical waves
A. Dopplers effect
B. Interference of waves
C. Beats phenomena
D. All of these
A. Number of loops
B. Tension in the string
C. Point where string is plucked
D. both A and C
A. Two times
B. Three times
C. Four time
D. Six time
A. 281m/sec
B. 333m/sec
C. 340m/sec
D. all of the above
A. fopen = 2 fclosed
B. fclosed = 2fopen
C. fopen = fclosed
D. fopen = 1 / f closed
A. an apparent increase in frequency
B. an apparent decrease in frequency
C. an apparent decrease in wavelength
D. no apparent change in frequency
A. constructive interference
B. destructive interference
C. beats
D. resonance
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
A. frequency in the audible range
B. frequency is greater than 20 kHz
C. frequency lower than 20 Hz
D. all of above