Awave length 30 cm travels with frequency 15 s^-1. what is the speed of the wave? a.4.5 m/s b.9.0 m/s c.1.2 cm/s d.2.0 cm/s

Wavelength of the wave = 30 cm

Converting it into meters:

Wavelength = m

Frequency of the wave = 15 Hz

Let the speed of the wave be v.

The relation between wavelength, frequency and speed of the wave:

Speed = frequency x wavelength

Speed = 15 x 0.3

Speed = 4.5 m/s

Hence, the speed of the wave = 4.5 m/s

Hence, option A is correct.

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