Flashcards in Sound Waves. Deck (12):
What is formula for calculating sound level L?
L = 10 log₁₀ I/I₀.
I= Intensity of minimum audible sound.
When comparing two sound levels L1 and L2? What is the formula in case of point source ?
When comparing two sound levels L1 and L2? What is the formula in case of line source ?
What is the formula of Doppler effect in sound ?
What is the formula of beats in sound waves ?
What is frequency of an open organ pipe ?
f= n(v/2l), here n=1,2,3...
What is the frequency of a closed organ pipe ?
In such a case, using n=1,3,5..we get first harmonic or fundamental tone , first overtone or third harmonic , second overtone or fifth harmonic and so on.
What type of waves are formed in stretched wire ?
Stationary transverse waves are formed in a stretched wire.
What type of waves are formed in an organ pipe ?
Longitudinal stationary waves are formed in open pipes.
Which end of pipe is displacement antinode, but pressure and density nodes ?
Open end of pipe is displacement antinode but pressure and density node.
Which end of pipe is displacement node , but pressure and density antinodes ?
Closed end of pipe is displacement node but pressure and density antinode.