Question:

The upward force due to surface tension (7) in a capillary tube is balancing downward weight of 75 ×10-⁴ N The inner circumference of the tube is:

Options :

  • (a) 1.25 × 10-² m
  • (b) 6.5 × 10-²m
  • (c) 0.25 × 10-² m
  • (d) 12.5 × 10-² m

Answer :

(a) 1.25 × 10-² m

Answer Steps :

Step 1

Step 2:

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