speed and frequency increases but its wavelength remains the same
speed and wavelength increases but its frequency remains the same
speed decreases
speed increases but its frequency and wavelength decreases
Explanation
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Discussions (29)
The instructor is confused,in the video explanation he explained when light travels from air to water.
The question is talking about sound wave not light waves and the speed of sound in water is more than that of the air, and sound travels faster in water than in the air. The speed of sound in water is 1480 metres per second while in air is 331.29 metres per second.
Therefore option B is still correct despite what he had explained.
Always confirm what someone tells you with research .
DON'T BE INDOLENT!!!🤫🤫
From the JAMB CBT video. The instructor said that the speed decreases from air to water. Therefore the answer is C.
V=f‹\
Velocity(V) and and lambda(‹\) increases while frequency(f) is constant
Sound travels faster in water than in air due to the fact that water is denser than air.
So, velocity and wavelength adjust proportionally while frequency remains the same.
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note frequency doesn't change, frequency is determined by the source of medium producing the wavelength
so basically wavelength=frequency × speed, so if speed change because of water is denser than air (I stand to be corrected) then the wavelength change cause the wavelength connect this two formula
DANKE SCHÖN ✌️
My school please review the questions well before video lessons because I check video lessons for more understandable explanation and why it has to be like that.
I believe you're always working on it 🫡🫡
This app has been so helpful not only for exams but also to refresh my memory when I have nothing doing so please keep up with the good work 🫡🫡
