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प्रश्न
A charged glass rod attracts a charged plastic straw.
विकल्प
True
False
उत्तर
This statement is True.
Explanation:
A charged glass rod has positive charges on its surface, while a charged plastic straw has negative charges on its surface. Since unlike charges attract each other, a charged glass rod attracts a charged plastic straw.
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संबंधित प्रश्न
Explain why sportsmen use shoes with spikes.
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.................... is the SI unit of force.
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Smoother the surface, ................. is the frictional force offered by it.
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Friction is a type of .................
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List the various states of matter that offer frictional force?
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Describe three different ways by which friction can be increased to help us in various situations?
Rolling friction is slightly greater than sliding friction.
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| Column I | Column II | |
| a) | Static friction | Viscosity |
| b) | Kinetic friction | Least friction |
| c) | Rolling friction | Objects are in motion |
| d) | Friction between the liquid layers | Objects are sliding |
| e) | Sliding friction | Objects are at rest |
Analogy
Objects placed at rest on earth: ______:: Bodies slide over the surface on other body: ______.
Assertion: We can live very happily if friction is not present in nature.
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