Physics, asked by nasirhussainkanhar45, 1 month ago

in a periodic wave, the distance between second and fifth crests is 15 cm what is the wavelength of the wave?​

Answers

Answered by GulabLachman
7

Given: In a periodic wave, the distance between second and fifth crests is 15 cm.

To find: Wavelength of the wave

Solution: Let the wavelength of the wave be denoted by l.

The distance between two consecutive crests or troughs is equal to the wavelength of the wave.

Therefore, distance between second and third crest= L

Distance between third and fourth crest= L

Distance between fourth and fifth crest= L

Therefore, distance between second and third crest= L+L+L

= 3L

But, distance is given as 15 cm.

Therefore,

3L= 15

=> L= 15/3

=> L = 5 cm

Therefore, the wavelength of the wave is 5 cm.

Answered by amitnrw
6

the wavelength of the wave is 5 cm if in a periodic wave, the distance between second and fifth crests is 15 cm

Distance between two adjacent trough or crests is known as wavelength

Horizontal Distance between adjacent trough and crest is half of wavelength

Vertical distance between trough and crest  is called wave height

Given here the distance between second and fifth crests

Distance between 2nd and 3rd Crest is Equal to wavelength

then Distance between 3rd  and 4th Crest is Equal to wavelength

then Distance between 4th  and 5th Crest is Equal to wavelength

Total Distance Between  second and fifth crests is equal to 3 times the wavelength

3 x wavelength = 15 cm

=> wavelength = 5 cm

the wavelength of the wave is 5 cm if in a periodic wave, the distance between second and fifth crests is 15 cm

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