A tape is wound tightly around a cylinder of radius 1 cm . After winding, the radius of the cylinder is found to be 2 cm . If the length of the tape is 10 m then the thickness of the tape should be about

• A

  0.001 mm.
• B

  0.01 mm .
• Correct answer
  C

  0.1 mm.
• D

  1.0 mm .

Hence, the correct answer is option: 'C'.