# Plase prove the marked formula...Logically it is not fitting to my mind that how that formula represents the path difference...please can you show me the drivation for it... Asked by nitishkrnehu09 | 9th Oct, 2017, 07:35: PM Expert Answer: - Let two particles be thrown at two points which are very near. - The first point of disturbance as S1 and the other as S2. - The waves emanating from S1 has arrived exactly one cycle earlier than the waves from S2. - It is obvious in this case that there is a path difference between the two waves of about λ (wavelength). - If the distance traveled by the waves from two disturbance is same, then path difference will be zero. - The inter relationship between the phase difference and path difference can be stated as: ΔX = λ⋅Δϕ / 2π -Here the Δ is the change also known as 'delta'  ΔX is path difference and   Δϕ is the phase difference.     Answered by Abhijeet Mishra | 10th Oct, 2017, 05:40: PM Concept Videos This video explains nature and characteristics of electromagnetic waves. This video explains other characteristics of the electromagnetic waves and ... This video contains practice questions on characteristics of em waves. Practice Test // $(window).on('load', function(){ //$(document).ready(function(){ if(showAds){ googletag.cmd.push(function() { /*googletag.defineSlot('/1039154/TopperLearning_WEB/TL_WEB_728x90_BTF', [[970, 90],[728, 90],[468, 60]], 'div-gpt-ad-1539848643692-article-detail-btf') .addService(googletag.pubads()).setCollapseEmptyDiv(true);*/ googletag.defineSlot('/1039154/TopperLearning_V1_WEB/TL_WEB_ROS_728x90_Bottom', [[970, 90], [728, 90]], 'div-gpt-ad-1585746040996-0').addService(googletag.pubads()).setCollapseEmptyDiv(true); }); } // }); // $(window).on('load', function(){ //$(document).ready(function(){ if(showAds){ googletag.cmd.push(function() { googletag.display('div-gpt-ad-1585746040996-0'); }); } // }); All Questions Ask Doubt pls explain Why light can travel in vacuum where as sound can not do so What is polarisation how are frequency and intencity of electromagnetic wave related? What is an electromagnetic wave? State the properties of Electromagnetic Waves. Which scientist a. Predicted the presence of electromagnetic waves b. Experimentally demonstrated the existence of electromagnetic waves Calculate the time period of visible light for which the human eye is most sensitive. Explain the Hertz experiment to generate the electromagnetic wave. Suppose a plane electromagnetic wave is travelling in x  direction. What is a. The direction of the electric and magnetic field vectors b. The ratio of magnitudes Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.

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