The maximum length of water column that can stay without falling in a vertically held capillary tube of diameter 1 mm and open at both the ends is (Acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ and surface tension of water $=0.07 \mathrm{Nm}^{-1}$ )

• A

  2.8 cm
• Correct answer
  B

  5.6 cm
• C

  1.4 cm
• D

  0 cm

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