**A wave has a wavelength of 1.5 m/s and a frequency of 3 Hz. What is its speed?**

**4.5 Hz**

**0.5 Hz**

**2 Hz**

**1.5 Hz**

**Answer:**

Correction in the question: The units of wavelength should be m, not m/s. And, the units of the calculated speed of wavelength should be m/s and not Hz.

Wavelength of wave (λ) = 1.5 m

Frequency of wave (ν) = 3 Hz

Let the speed of the wave be denoted by the symbol, c.

So, the required equation is,

c=λ×ν

c = 1.5 x 3

So, the speed of the wave is = c = 4.5 m/s.