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A sound wave has a frenquency …

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A sound wave has a frenquency 2hz and wave length 40 cm. How long will it take to travel 1.6 km

Posted by Aanchal Yadav 5 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Pankaj Singh 5 years, 2 months ago

V=f× wavelength V = 2×0.4=0.8m/sec Speed=distance÷time 0.8 = 1600÷time Time = 1600÷0.8 =20sec

0Thank You

Hipresh Biswal 5 years, 2 months ago

Frequency=2hz Wavelength=40cm=0.40m We know that speed = wavelength× frequency =0.40×2hz=0.8m/s The time taken by the wave to travel a distance ,d= 1.6km is t=d/v= 1.6× 1000 m/0.8m=2s

1Thank You

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CBSE > Class 09 > Science