Home › CBSE Class 12 (Science) › Physics › Wave Optics › Equal waves of amplitude a differ in phase by φ.…
Equal waves of amplitude a differ in phase by φ. Resultant amplitude?
Aa cos(φ/2)
B2a cos(φ/2)
C2a cos φ
Da cos φ
Answer & Solution
Correct answer: B. 2a cos(φ/2)
Adding two equal sinusoids with phase difference φ gives an amplitude of 2a cos(φ/2).
Related questions
Which statement about electromagnetic waves such as light is correct?What is light called when its electric field is restricted to a single fixed direction?What did Michelson and Morley find in their search for ether?Light of 600 nm falls on a 0.2 mm slit with a screen 1 m away. What is the width of the ceDiffraction is noticeable when the slit size, versus wavelength, is?Two coherent waves each of intensity I0 superpose in phase at a point. What is the resultaPath difference is a half-integral multiple of wavelength. What is seen?In Young's experiment, slits 0.5 mm apart and a screen 1 m away are lit by 500 nm light. W