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(D) The upward force due to surface tension $(F)$ acting on the circumference of the capillary is given by the formula: $F = T 	imes L$,where $T$ is

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$1.5$

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(D) The upward force due to surface tension $(F)$ acting on the circumference of the capillary is given by the formula: $F = T 	imes L$,where $T$ is the surface tension and $L$ is the inner circumference of the capillary.Given: $F = 108 \ dyne = 108 	imes 10^{-5} \ N$ (since $1 \ dyne = 10^{-5} \ N$).Given: $T = 7.2 	imes 10^{-2} \ N/m$.We need to find the circumference $L$.Using the formula $F = T 	imes L$,we get:$L = F / T$$L = (108 	imes 10^{-5}) / (7.2 	imes 10^{-2})$$L = (108 / 7.2) 	imes 10^{-3}$$L = 15 	imes 10^{-3} \ m$$L = 1.5 	imes 10^{-2} \ m = 1.5 \ cm$.Therefore,the inner circumference of the capillary is $1.5 \ cm$.

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