Neco Model Questions Vol1 2025 Physics Question 10

Practice objective / multiple choice question 10 from the 2025 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2025 Physics Objective / Multiple Choice Medium Difficulty
Question 10 NECO_MODEL_QUESTIONS_VOL1 • 2025 • PHYSICS • objective

Two harmonic waves travel in the same direction along a string and are described by \(y_{1}=3\sin(kx-\omega t)\) and \(y_{2}=4\sin(kx-\omega t+60^{\circ})\). Find (a) the amplitude of the resultant wave obtained by superposition, and (b) the ratio of the intensity of the resultant wave to the intensity of the first wave alone.

Answer Options

A. Resultant amplitude = \\sqrt{41}\\ (≈6.40); intensity ratio = 41/9 ≈ 4.56
B. Resultant amplitude = \\sqrt{25}\\ (≈5); intensity ratio = 25/9 ≈ 2.78
C. Resultant amplitude = \\sqrt{33}\\ (≈5.74); intensity ratio = 33/9 ≈ 3.67
Correct Answer D. Resultant amplitude = \sqrt{37}\ (≈6.08); intensity ratio = 37/9 ≈ 4.11
Correct Answer
D
Correct Option:
Resultant amplitude = \sqrt{37}\ (≈6.08); intensity ratio = 37/9 ≈ 4.11

About This Question

This is Neco Model Questions Vol1 2025 Physics Question 10. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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