Q: If a liquid of surface tension 70 dyne/cm² rises in a capillary up to 8 cm, the radius of capillary will be- यदि एक द्रव जिसका पृष्ठ तनाव 70 डाइन/सेमी. है, एक केशनली में 8 सेमी. चढ़ता है, तो केशनली की त्रिज्या होगी-
A.
0.3 cm / 0.3 सेमी.
B.
0.4 cm / 0.4 सेमी.
C.
0.018 cm / 0.018 सेमी.
D.
0.2 cm / 0.2 सेमी.
Correct Answer:
Option C -
Explanations:
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