Question

Two waves are represented by y₁ = Asinωt and y₂ = Acosωt. The phase of the first wave, w.r.t. to the second wave is…….

(A) more by radian 

(B) less by π radian 

(C) more by π/2 

(D) less by π/2

Answer 1

The correct option (D) less by π/2

Explanation:

y₁ = A sin ωt 

y₂ = Acosωt. 

i.e. y₂ = Asin{ωt + (π/2)} 

Hence 1^st wave is lagging behind second by (π/2).