

Explanation
(a)(i) A wave motion is a process of transferring a disturbance in form of K.E from one point to another in a medium without any transfer of the particles of the medium.
(ii)




Radio wave


Sound wave




It is electro-magnetic wave.
It is a transverse wave
Requires no medium for propagation.
Has velocity equal to that of light.


It is a mechanical wave
It is longitudinal wave

Requires medium for propagation.

Its velocity is less than that of light.





(b) (i)

Fill the burette with water. Set the prongs of the fork into vibration and bring it near the open end of the burette, then gradually open the tap to run out some water, there-by increasing the length of the air column until a loud sound is heard. Measure and record the length L\(_2\) of the air column. Further run out the water while le vibrating tuning fork is still held over open end of the burette until a second loud sound is heard, then read and record the length L\(_2\) of the air column. Last repeat the experiment to obtain L L\(_1\) and L L\(_2\) again and find the mean values of L L\(_1\) and L L\(_2\). Obtain the frequency of the tuning fork using
f = \(\frac{v}{2(L_2 - L_1)}\)
ii) Precautions: - repeat the experiment to obtain nean values
- tap tuning fork on a pad not on a hard surface
- hold tuning fork over the burette to avoid contact
- obtain two lengths of air column to remove rnd correction.

(c) \(f_o = \frac{v}{4L} = \frac{340}{4 \times 100 \times 10^{-2}}\) = 851Hz

