SSC MTS 5 Aug 2019 Shift 3 Paper

Question : 34 of 100

Marks: +1, -0

A ribbon of uniform width and length l is wound around a right circular cylinder to completely cover its curved surface. If the circumference of the base of the cylinder is c, then the number of turns of the ribbon around the cylinder is:

1/4c
2l/c
l/c
1/2c

Validate

Solution:

A ribbon of uniform width and length l is wound around a right circular cylinder to completely its curved surface,
Number of turns =

{\length \of \wire}/\circumference

⇒ Number of turns =

1/\c

∴ The number of turns of the ribbon around the cylinder is l/c.

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