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A firecracker exploding on the surface of a lake is herd as two sounds on a boat close to the water surface. Sound A composite wire is made by joining two uniform wires. If l1 =l2=l and u1 =u2/9 =u. Tension in the string is T, u is mass per unit length. The lowest frequency such that the Junction is an antinode with a speed u in water and a speed in air is v. The distance from exploding firecracker to the boat isA uvt/u+vB t(u+v)/uvC t(u-v)/uvD uvt/u-v

A firecracker exploding on the surface of a lake is herd as two sounds on a boat close to the water surface. Sound A composite wire is made by joining two uniform wires. If l1 =l2=l and u1 =u2/9 =u. Tension in the string is T, u is mass per unit length. The lowest frequency such that the Junction is an antinode with a speed u in water and a speed in air is v. The distance from exploding firecracker to the boat isA uvt/u+vB t(u+v)/uvC t(u-v)/uvD uvt/u-v

Grade:11

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
2 years ago
Dear student

Please write the Question in a standard form or attach an image of the question

Regards
Vikas TU
14149 Points
2 years ago
Dear student 
Question is not clear 
Please attach an image, 
We will happy to  help you 
Good Luck
Cheers

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