Advertisements
Advertisements
Question
Why don't we have interference when two candles are placed close to each other and the intensity is seen on a distant screen? What happens if the candles are replaced by laser sources?
Solution
In order to get interference, the sources should be coherent, i.e. they should emit wave of the same frequency and a stable phase difference. Two candles that are placed close to each other are distinct and cannot be considered as coherent sources. Two independent sources cannot be coherent. So, two different laser sources will also not serve the purpose.
APPEARS IN
RELATED QUESTIONS
Draw the intensity distribution for the fringes produced in interference ?
Why are coherent sources necessary to produce a sustained interference pattern?
State the importance of coherent sources in the phenomenon of interference.
Can we conclude from the interference phenomenon whether light is a transverse wave or a longitudinal wave?
What is meant by coherent sources of light?
Interference effects of light from two sources can be observed if the sources are ______.
If we have two coherent sources S1 and S2 vibrating in phase, then for an arbitrary point P destructive interference is observed whenever the path difference is ______.
Two coherent source have wavelength λA and λB Then.
Two wave have intensity ratio 25:4 What is the ratio of maximum to minimum intensity?
In a wave, the path difference corresponding to a phase difference of p is:-
Two coherent monochromatic light beam of intensities I and 4I are super imposed. The max .and min. possible intensities in the resulting beam are
State two conditions for two light sources to be coherent.
In an interference experiment, the ratio of amplitudes of coherent waves is `a_1/a_2 = 1/3.` The ratio of maximum and minimum intensities of fringes will be ______.
What happens to the interference pattern when two coherent sources are far apart from each other?
