Free Printable waves

1.

$y=A\sin\left(kx-\omega t+30\degree\right)$

A wave travels on a light string . the equation of the wave is given up. If it strikes a heavy string and 64% of energy is reflected back the equation of the reflected wave is

a)

$y=0.8\sin\left(kx-\omega t+30\degree+180\right)$

b)

$y=0.8\sin\left(kx+\omega t+30\degree+180\degree\right)$

c)

$y=0.8\sin\left(kx-\omega t+30\degree\right)$

d)

$y=0.8\sin\left(kx-\omega t-30\degree\right)$

2.

The lengths of the two wires of the same material are in the ratio 1:2 their tensions are in the ratio 1:2 and their diameters are in the ratio1:3. the ratio of the notes they emit when sounded together by the same source is together

a)

$\sqrt{2}$

b)

$\sqrt{3}$

c)

$2\sqrt{3}$

d)

$3\sqrt{2}$

3.

third overtone of a closed pipe is in unison with fourth harmonic of an open organ pipe. Find the ratio of the lengths of the pipe. (closed pipe to open pipe)

a)

7:8

b)

8:7

c)

1:4

d)

1:2

4.

Two tuning forks P and Q when set in vibration gives 4 beats per second . If a prong of the fork P is filed, the beats are reduced to 2 beats per second. Determine the original frequency of P if that of Q is 250 Hz.

a)

248 Hz

b)

246 Hz

c)

254 Hz

d)

252 Hz

5.

Two waves of equal frequencies have their amplitude in the ratio 3:5. They are superimposed on each other. Calculate the ratio of maximum and minimum intensities of the resultant waves.

a)

8:2

b)

4:1

c)

16:1

d)

none of these

waves

Total questions: 5

Worksheet time: 5mins

Similar Resources on Wayground