waec model questions vol1 2024 physics

Objective Question 2

Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2024
A wave travels through a medium with a speed of 340 m/s and has a frequency of 170 Hz. Calculate the wavelength of the wave. If the medium is changed and the speed increases to 510 m/s while maintaining the same frequency, what will be the new wavelength?
Answer Options
A. 2.5 m for the first medium; 2.8 m for the second medium.
B. 1.5 m for the first medium; 4 m for the second medium.
C. 3.5 m for the first medium; 5 m for the second medium.
Correct Answer D. 2 m for the first medium; 3 m for the second medium.
Correct Answer
D

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