So were asked about a wave and the frequency of the wave is doubled. What happens to the wavelength? As a result, in what happens to the speed of that wave, we're gonna derived of the speed of a wave. We know that speed is the distance or the displacement traveled per unit time. We have to choose our values carefully to come up with an equation. So we know a few things from our previous videos the period, which is the time it takes for one cycle. And also we have the wavelength, which is the length of a cycle cycle. Time is units of and seconds. And we went through this and units off years. So if we were to have a wave pass, um, or traverse for one period painful period, that means there would be one full cycle that travels. And in one full cycle there's a length of lambda that is passed. So for this equation, we can write Lambda as our displacement for our distance traveled and the period as the time traveled. This is a correct expression. We know also that T r. The frequency is one over tea. The frequency is the in first of the period. So this equation can be written as Lambda F the wavelength times. The frequency is equal to the speed of the wave. Now, the speed of the wave is constant in every medium, speed is constant. You have to remember this, uh, for any medium, you cannot change the speed in which a wave moves for air, for example. For example, it's about 343 leaders per second, and you cannot change the speed of in which the wave travels. Will always travel at this, that at this speed and 43 years per second. So the question says that our wavelength will change as a result of the frequency changes. So if our frequency doubles have a frequency, doubles what that past happened to our wavelength in order to keep the speed side the same. Well, the answer is that it would be halved. It would be halved because 1/2 times two is one and one times its value is the same with the constant. So that would allow our speed to remain constant in this situation here. So our wavelength is is halved because of our, uh, frequency being doubled and the speed, which is always constant in the medium, does not change. So that is our answers. Here we will say the wavelength lambda is halved and speed, uh, is constant. Okay, so that's the answers for these. These questions is that a wavelength is have as a result of the frequency being doubled, and the frequency is constant because it's constant in any, uh, medium.