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विषय
मुख्य विषय
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A wooden block floats in alcohol with 3/8 of its length above alcohol. If it is made to float in water, what fraction of its length is above water? Density of alcohol is 0.80 g cm-3.
Chapter: [4.1] Fluids
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The apparent weight of a body in a fluid is:
Chapter: [4.1] Fluids
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The phenomenon due to which a solid experiences upward force when immersed in water is called:
Chapter: [4.2] Buoyancy, Upthrust
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When an object sinks in a liquid, its:
Chapter: [4.2] Buoyancy, Upthrust
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When a body is wholly or partially immersed in a liquid, it experiences a buoyant force which is equal to:
Chapter: [4.2] Buoyancy, Upthrust
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What is a natural magnet? State three properties of a magnet.
Chapter: [8.2] Magnetism
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What is an artificial magnet? Why do we need artificial magnets?
Chapter: [8.2] Magnetism
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What do you understand by poles of a magnet?
Chapter: [8.2] Magnetism
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How will you test whether a given rod is made of iron or copper?
Chapter: [8.2] Magnetism
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How will you test the polarity of a magnet?
Chapter: [8.2] Magnetism
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Define the term Poles of a magnet
Chapter: [8.2] Magnetism
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Define the term Effective length of a magnet
Chapter: [8.2] Magnetism
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You are given two similar bars; one is a soft iron and the other is a magnet. How will you distinguish between them without using any other magnet or bar?
Chapter: [8.2] Magnetism
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Can we isolate the poles of a magnet?
Chapter: [8.2] Magnetism
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Describe a simple experiment to demonstrate that like poles repel each other while unlike poles attract.
Chapter: [8.2] Magnetism
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What are the magnetic poles? Where are they situated?
Chapter: [8.2] Magnetism
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