Two waves, travelling in the same direction through the same region, have equal frequencies, wavelengths and amplitudes. If the amplitude of each wave is 4 mm and the phase difference between the waves is `90^@`, what is the resultant amplitude ?

Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is 120^@ . The resultant amplitude will be

Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is 120^@ . The resultant amplitude will be

Two sound waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is 120^(@) . The resultant amplitude will be

Two sound waves travel in the same direction in a medium . The amplitude of each wave is A and the phase difference between the two waves is 120^(@) . The resultant amplitude will be :

Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is 120^@ . The resultant amplitude will be

Two identical sinusoidal waves, moving in the same direction along a stretched string, interfere with each other. The amplitude y of each wave is 9.8 mm, and the phase difference p between them is 100^@. (a) What is the amplitude y. of the resultant wave due to the interference, and what is the type of this interference? (b) What phase difference, in radians and wavelengths, will give the resultant wave an amplitude of 4.9 mm?

Two waves of amplitudes 3mm and 2 mm reach a point in the same phase. What is the resultant amplitude ?

If resultant wave of two waves, each of amplitude A is also A then, phase difference between those two waves is