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WAEC Physics 2019 Paper

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Question : 19

Total: 49

A transverse pulse of frequency 9 Hz traves 4.5m in 0.6 s. Calculate the wavelength of the pulse.

3.33 m
0.30 m
0.83 m
1.20 m

Solution:

Wavelength ( $\alpha$ ) = $\frac{\text{Velocity (V)}}{\text{Frequency (f)}}$

Velocity = $\frac{\text{Distance}}{\text{Time}}$ = $\frac{4.5}{0.6}$

= $\frac{7.5}{9.0}$

= 0.83m

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