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    				| 1. | 
                                    दो तरंगों `y_1=a_1sin(omegat-(2pix)/lamda)` तथा `y_2=a_2sin(omegat-(2pix)/lamda+phi)` के बिच पथांतर होगा :A. `lamda/(2pi)phi`B. `lamda/(2pi)(phi-pi/2)`C. `(2pi)/lamda(phi-(2pi)/lamda)`D. `(2pi)/lamdaphi` | 
                            
| Answer» Correct Answer - A | |