badnetpratik badnetpratik

25-02-2021
Physics

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a wave of frequency 1khz has wave length of 100 cm.how longwill it take to move through a distance of 2 km

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celly786712 celly786712

25-02-2021

f= 2000hz

w.l. = .35m

speed = f × w.l.

700m/s

now dist. = 1500 m

time= d/sp.

1500/700

15/7s

2.142sec.

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