JAMB Physics 2010 Objective — Question 24

Question 24 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2010 Objective paper, with the correct answer and a full explanation.

24. The wavelength of a wave travelling with a velocity of 420 ms-1 is 42 m. What is its period? A. 1.0 s B. 0.1 s C. 0.5 s D. 1.2 s

A. 1.0 s
B. 0.1 sCorrect
C. 0.5 s
D. 1.2 s

Explanation

Frequency = Velocity/Wavelength = 420/42 = 10s-1 or 10Hz. Period T = 1/f = 1/10 = 0.1s.

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