AP Police Constable practice question
A small drop of a liquid falling freely in air takes a spherical shape mainly because of
From a AP Police Constable Science practice set · Science
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Correct answer: (D) Surface tension
Surface tension makes a liquid minimise its free surface area. For a given volume the sphere has the least surface area, so a freely falling small drop becomes spherical.
हिंदी में प्रश्न
గాలిలో స్వేచ్ఛగా పడుతున్న ఒక చిన్న ద్రవ బిందువు గోళాకారాన్ని పొందడానికి ప్రధాన కారణం ఏది?
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सही उत्तर: (D) తలతన్యత
తలతన్యత ద్రవ ఉపరితల వైశాల్యాన్ని కనిష్ఠం చేస్తుంది. ఇచ్చిన ఘనపరిమాణానికి గోళానికే అతి తక్కువ ఉపరితల వైశాల్యం ఉంటుంది.
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