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A falling drop of rain water ac-quires the spherical shape due to –
- a)Viscosity
- b)Surface Tension
- c)Atmospheric pressure
- d)Gravitational force
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A falling drop of rain water ac-quires the spherical shape due to &nda...
Raindrops start out as round high in the atmosphere as water collects on dust and smoke particles in clouds. But as raindrops fall, they lose their rounded shape. A raindrop falling through the atmosphere forms as a roughly spherical structure due to the surface tension of water. This surface tension is the "skin" of a body of water that makes the molecules stick together. The cause is the weak hydrogen bonds that occur between water molecules.
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A falling drop of rain water ac-quires the spherical shape due to &nda...
Explanation of Spherical Shape of Rain Drops
Rain drops are fascinating natural phenomena that exhibit a spherical shape when they fall. This shape is primarily due to surface tension.
What is Surface Tension?
- Surface tension is a physical property of liquids that causes them to behave as if their surface is covered with a stretched elastic membrane.
- It arises from the cohesive forces between liquid molecules, which are stronger at the surface due to a lack of neighboring molecules.
Why Spherical Shape?
- The spherical shape minimizes the surface area for a given volume. This is crucial because surface tension seeks to reduce the energy of the system.
- A sphere has the smallest surface area for a given volume, which means that when raindrops form, they naturally take on this shape to minimize the energy associated with the liquid's surface.
Role of Other Forces
- While gravitational force influences the falling motion of raindrops, it does not dictate their shape.
- Atmospheric pressure and viscosity also play roles in the behavior of raindrops, but they do not primarily determine their spherical form.
- Surface tension remains the dominant force in defining the shape of a raindrop.
Conclusion
In summary, the spherical shape of falling raindrops is a direct result of surface tension, which works to minimize the surface area and energy of the liquid. This natural phenomenon exemplifies the interplay of physical forces in our environment.
Rain drops are fascinating natural phenomena that exhibit a spherical shape when they fall. This shape is primarily due to surface tension.
What is Surface Tension?
- Surface tension is a physical property of liquids that causes them to behave as if their surface is covered with a stretched elastic membrane.
- It arises from the cohesive forces between liquid molecules, which are stronger at the surface due to a lack of neighboring molecules.
Why Spherical Shape?
- The spherical shape minimizes the surface area for a given volume. This is crucial because surface tension seeks to reduce the energy of the system.
- A sphere has the smallest surface area for a given volume, which means that when raindrops form, they naturally take on this shape to minimize the energy associated with the liquid's surface.
Role of Other Forces
- While gravitational force influences the falling motion of raindrops, it does not dictate their shape.
- Atmospheric pressure and viscosity also play roles in the behavior of raindrops, but they do not primarily determine their spherical form.
- Surface tension remains the dominant force in defining the shape of a raindrop.
Conclusion
In summary, the spherical shape of falling raindrops is a direct result of surface tension, which works to minimize the surface area and energy of the liquid. This natural phenomenon exemplifies the interplay of physical forces in our environment.
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A falling drop of rain water ac-quires the spherical shape due to –a)Viscosity b)Surface Tension c)Atmospheric pressure d)Gravitational forceCorrect answer is option 'B'. Can you explain this answer?
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