**What will hapen to the wavelength of the wave it the wave\'s frequency is doub
ID: 1381355 • Letter: #
Question
**What will hapen to the wavelength of the wave it the wave's frequency is doubled? -it will quadruple -it will stay the same -it will be Cut in half -it will double **The figure below shows a standing wave created in a string. If the length of the string is 5.0 m, what is the wavelength of this wave? ***In problem 7 if we assume that transverse waves propagate in this string at 400 m/s, what is the frequency of the wave? -200 Hz -80 Hz -800 Hz -278 Hz In the activity that we completed this week in the lab, lets assume that the speed of the sound in the air column is 330 m/s. the first and second maximum intensities (resonances) occur when the length of the air Column is 5 cm and 15 cm. wha tis the wavelength of the sound waves generated by the tuning fork? -20cm -10cm -15cm -5cm For the situation described in question 9. what is the frequency of the tuning fork? -6600 Hz -1000 Hz -1650 Hz -3300 HzExplanation / Answer
1) It will be cut in half
Use the relation, v = lamda*f
in a medium, v is constant.
so lamda1*f1 = lamda2*f2
if f2 = 2*f1
==> lamda2 = lamda1/2
2) 2m
total 5 loops.
so, 5*(lamda/2) = L
==> lamda = 2*L/5
= 2*5/5
= 2 m
3) 200Hz
v = lamda*f
==> f = v/lamda
= 400/2
= 200 Hz
4) 20 cm
5) 6600 Hz
f = v/lamda
= 330/0.05
= 6600 Hz
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