When two light waves of same amplitude 'a' traveling though medium arrive at a point in same phase then the resultant amplitude R at that point is :

When two light waves of same amplitude 'a' traveling though medium arr

1.	When two light waves of same amplitude 'a' traveling though medium arrive at a point in same phase then the resultant amplitude R at that point is :
Answer» R = 0 R = a R = 3a R = 2a Answer :D

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When two light waves of same amplitude 'a' traveling though medium arrive at a point in same phase then the resultant amplitude R at that point is :

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