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Question

A wheel completes 2000 rotations in covering a distance of 9.5 km. The diameter of the wheel is


A
1.5 m
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B
1.5 cm
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C
7.5 m
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D
7.5 cm
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Solution

The correct option is A 1.5 m

Distance covered by wheel in 1 rotation =2πr=πD
(Where, D = 2r = diameter of wheel)
Distance covered in 2000 rotation =2000πD=9.5×103m (given)
D = 1.5 meter


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