Question 24: A copper rod of radius 1 cm and length 2 cm is drawn into a
wire of length 18 m of uniform thickness. Find the thickness of the wire.
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4
Answer:
Thickness of the given wire=1/15 cm or 0.67cm( approximately)
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2
Answer:
r2 = r1 * Root ( L1/L2)
= 1 x Root ( 2/1800) = 1 /30 cm or 0.33 mm
thickness = 2 R2 = 0.67 mm approx
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