A soap bubble having radius of $1 \mathrm{m}\mathrm{m}$ is blown from a detergent solution having a surface tension of $2.5\times {10}^{-2}\mathrm{N} {\mathrm{m}}^{-1}.$ The pressure inside the bubble equals at a point $Z_0$ below the free surface of water in a container. Taking $g=10 \mathrm{m} {\mathrm{s}}^{-2},$ density of water $={10}^3 \mathrm{k}\mathrm{g} {\mathrm{m}}^{-3},$ the value of $Z_0$ is

• A

  $100 \mathrm{c}\mathrm{m}$
• B

  $10 \mathrm{c}\mathrm{m}$
• Correct answer
  C

  $1 \mathrm{c}\mathrm{m}$
• D

  $0.5 \mathrm{c}\mathrm{m}$

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