KEAM 2023 Physics and Chemistry Solved Paper

Question : 29 of 120

Marks: +1, -0

A glass capillary of radius 0.15‌mm is dipped into a liquid of density and surface tension 1600‌kg∕m3 and 0.12Nm−1, respectively. The liquid in the capillary rises by a height of 5.0‌cm. The contact angle between liquid and glass will be : (Take g=10ms−2 )