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Examples from NCERT Book
Examples from NCERT Book
Last updated at March 16, 2023 by Teachoo
Example 12.3 A ship sends out ultrasound that returns from the seabed and is detected after 3.42 s. If the speed of ultrasound through seawater is 1531 m/s, what is the distance of the seabed from the ship? Time taken by sound = 3.42 s Speed of ultra sound = 1531 m/s Let distance between seabed and ship = d β΄ Distance travelled by ultrasound = 2 Γ d We know that, Speed = π·ππ π‘ππππ/ππππ β΄ Distance = Speed Γ Time 2d = 1531 Γ 3.42 d = (1531 Γ 342)/(2 Γ 100) d = (1531 Γ 171)/100 d = 261801/100 d = 2618 m Distance between seabed and ship is 2618 m