SATHEE: Properties of Matter 1 Question 15

Properties of Matter 1 Question 15

15. The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?

(1981, 2M)

(a) Length $= 50 c m$ , diameter $= 0.5 m m$

(b) Length $= 100 c m$ , diameter $= 1 m m$

(d) Length $= 300 c m$ , diameter $= 3 m m$ Objective Question II (One or more correct option)

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Answer:

Correct Answer: 15. (a)

Solution:

$Δ l = \frac{F l}{A Y} = \frac{F l}{(\frac{π d^{2}}{4}) Y}$ or $(Δ l) \propto \frac{l}{d^{2}}$

Now, $\frac{l}{d^{2}}$ is maximum in option (a).

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Properties of Matter 1 Question 15

15. The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?

Answer:

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