Question: The voltage 10 cos ωt and V cos (ωt + α) are applied to the X and Y plates of a CRO. The Lissajous figure observed on the screen is a straight line of 60° to the positive axis. Then

MCQ: The voltage 10 cos ωt and V cos (ωt + α) are applied to the X and Y plates of a CRO. The Lissajous figure observed on the screen is a straight line of 60° to the positive axis. Then

• A. V = 10, α = 60°
• B. V = 10, α = 0°
• C. V = 10 , α = 60°
• D. V = 10 , α = 0°