Question

a. Describe how changing the amplitude changes the wave. b. Describe the effect of changing the wavelength. c. Describe the effect of changing the frequency.

Answer 1

a) intensity of wave is proportional to square of wave (I $\alpha$ $A^{2}$ ), means if amplitude double energy per unit area per unit time(INTENSITY) becomes four times.

b) wave length is defined as minimum distance between two particles in same phase OR distance between to consecutive crest of trough. wave length changes by change in mendium, so it is going to change the speed, so it is going to change speed of progation of energy.

c) usually frequecny does not change when wave propgate. different frequncy means waves are from diffirent source. and intesity is proportional to square of frequency.