untary Problems INTERFERENCE OF TWO s, and S1, emitting 3-m radiowaves in phase
ID: 1795506 • Letter: U
Question
untary Problems INTERFERENCE OF TWO s, and S1, emitting 3-m radiowaves in phase are separated by 3 m·Rew tr must one point sdirectly in front of either source along a perpendieular to 38, before encoruntrng Two in the irradiance? Ane. 2.25 m e alrpendicula rwo equal-amplitude point sources radiating P-states at Under what eireumstances will the irradiance measured on a distant scre constituent irradiances? the same wavelength are locked in phse. Ams. When o , i.e. when the two planes of vibration are normal. waves, each having a frequeney of 100 H, are separated by 60 em and Two point sources of miero transmit in phase. Describe the radiation pattern. 6.54 od 0, 30°, 90°, 150°, 180°, 210°, 270° and 330° measured from the normal Lobes occur at to the line of centers. Ans. Show that even though a fringe pattern exists for two coherent point sources of equal wrlength, energy is conserved. In other words, verify that when the source separationP4 laseraged over a large region of space is zero. How do things change when a like a single source of double the strength of either one. Ana, an expression for the radiation pattern of two equal-strength point sourees, Le the trradiance tiallneuon of , if the sources are separated by a distance a, have the same frequency, and are as a function out of phase (e-0)Explanation / Answer
6.56 This can be done using malus law, which states that
I = Io cos^2 (phi/2)
where phi is the net phase difference between the two wavees
here the phase difference at angle theta is given as
theta = 2Pi *a sin(theta)/lambda
and already e1-e2phase difference was there
As both the sources are same the highest intensity will be (2A)^2 i.e. 4Io
Hence
I = Io cos^2 ( Pi *a sin(theta)/lambda + (e1 -e2)/2 )
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.