Answer : A. Decreases to ![\dfrac{1}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7D)
Explanation :
We know the relation between speed, wave length and frequency
![v = f \times \lambda](https://tex.z-dn.net/?f=v%20%3D%20f%20%5Ctimes%20%5Clambda)
If the wavelength is tripled, while the speed of the wave is held constant the the frequency will decreases to ![\dfrac{1}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7D)
So, the frequency will be decreases to ![\dfrac{1}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7D)
Answer:
Hence the distance covered by the object is 80m
Explanation:
A triangle is just a shape...