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QNEET-2013-Ph-1532: NEET 2013 Physics - Class 11 NEET-2013-Ph-1532 Solution: The following four wires are made of the same material. Which…
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied? length = 200 cm diameter = 2 mm length = 300 cm diameter = 3 mm length = 50 cm diameter = 0.5 mm length = 100 cm diameter = 1 mm
Multiple Choice Options
- A length = 200 cm, diameter = 2 mm
- B length = 300 cm, diameter = 3 mm
- C length = 50 cm, diameter = 0.5 mm
- D length = 100 cm, diameter = 1 mm
Step-by-Step Verified Solution
F = Y A L _ _
So, extension, _ _ L A _ L D 2
[ _ F and Y are constant]
_ 1 _ 100 1 2 _ 100 and _ 2 _ 200 2 2 _ 50
_ 3 _ 300 3 2 _ 100 3 and _ 4 _ 50 1 4 _ 200
The ratio of L D 2 is maximum for case (length = 50 cm, diameter = 0.5 mm)