2. Waves and Oscillations
Superposition — Quiz
Test your understanding of superposition with 5 practice questions.
Practice Questions
Question 1
Two waves of amplitudes $A_{1}=3\,$m and $A_{2}=7\,$m superpose with a phase difference of $45^\circ$. What is the resultant amplitude $A_{r}$?
Question 2
Two coherent waves of wavelength $\lambda$ have a path difference $\Delta x=5\lambda/6$. What is their phase difference $\Delta\phi$?
Question 3
Two waves of intensities $I_{1}=2\,\mathrm{W/m^{2}}$ and $I_{2}=8\,\mathrm{W/m^{2}}$ with phase difference $\phi=120^\circ$ superpose. What is the resultant intensity $I$?
Question 4
Two coherent waves have amplitudes $A$ and $2A$. What is the ratio of the maximum intensity in constructive interference to the minimum intensity in destructive interference?
Question 5
Two waves are described by $y_{1}=0.1\cos(50\pi t)$ and $y_{2}=0.1\cos(54\pi t)$. What is the beat period $T_{b}$?