Question

(iii) The mercury in the capillary tube of clinical thermometer does not flow back because :
(a) capillary tube is very fine
(b) there is a kink in capillary tube
(c) mercury sticks to the capillary tube
(d) none of these​

Answer 1

iii) The mercury in the capillary tube of clinical thermometer does not flow back because :

(a) capillary tube is very fine

(b) there is a kink in capillary tube

(c) mercury sticks to the capillary tube

(d) none of these

Shayad (a)