if wavelength of wave is 20 cm and time period is T.what is the distance travelled by crest on wave in 1.25T.
Answers
Answer: 25 cm
Explanation:
Laymbda =20cm
Time period = T
v=f lambda
v= 1/T * lambda
v = 1/T * 20 cm
S = vt
S= (20 / T) 1.25 T
S= 25 cm
Given : wavelength of wave is 20 cm and time period is T.
To Find : the distance travelled by crest on wave in 1.25T.
Solution:
the distance travelled by crest on wave in 1 time period = wavelength
=> the distance travelled by crest in 1 T = 20 cm
=> the distance travelled by crest in 1.25 T = 1.25 * 20 cm
=> the distance travelled by crest in 1.25 T = 25 cm
Wavelength = Distance between consecutive crest or consecutive trough
Distance between n consecutive crest and trough is half of the wavelength
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