Question
Explain constructive and destructive interference with the help of a diagram?
✓
Answer
Constructive and destructive interference:
- Points, where the crest of one wave coincides with the crest of another wave and where the trough of one wave coincides with the trough of another wave, are points with the maximum displacement. At these points, displacement is twice that for each wave. These are points of constructive interference.
- Points, where the crest of one wave is coincident with the trough of another, are points with zero displacements. These are points of destructive interference.
Interference for waves
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Obtain an expression for the decay law of radioactivity. Hence show that the activity $A(t) =\lambda N_O e^{-\lambda t}$.
→Draw a neat labelled diagram of a Sterling cycle and describe the various processes taking place in a Sterling engine.
Why do grinding wheels have large mass and moderate diameter?
Represent graphically intensity distribution in
(a) Young’s double-slit interference
(b) single- slit diffraction and
(c) double-slit diffraction
(a) Young’s double-slit interference
(b) single- slit diffraction and
(c) double-slit diffraction
Distinguish between progressive waves and stationary waves.
Express the kinetic energy of a rotating body in terms of its angular momentum.
State and explain the principle of a capacitor.
Define the resolving power of a telescope and state its formula. What are the advantages of using a large objective lens in an astronomical telescope:
Explain the Rayleigh criterion for the limit of resolution for
(i) two linear objects
(ii) a pair of point objects.
(i) two linear objects
(ii) a pair of point objects.
Calculate the energy radiated in one minute by a blackbody of surface area $100 cm^2$ when it is maintained at $227^{\circ} C$. (Take Stefen's constant $\sigma=5.67 \times 10^{-8} J m ^{-2} s^{-1} K^{-4}$ )
→