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Distinguish between
Magnetic and non-magnetic materials.
Chapter: [8.2] Magnetism
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What do you mean by pressure? Write its SI unit.
Chapter: [4.1] Fluids
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Is pressure a scalar or vector physical quantity?
Chapter: [4.1] Fluids
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What do you mean by thrust? Write its SI unit.
Chapter: [4.1] Fluids
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What length of the water column is equivalent to 0.76 m mercury column?
Chapter: [4.1] Fluids
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State whether thrust is scalar or vector.
Chapter: [4.1] Fluids
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(i) Calculate the height of a water column which will exert on its base the same
Pressure as the 70 cm column of mercury.
(ii) Will the height of the water column change if the cross-section of the water column is made wider?
Chapter: [4.1] Fluids
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Explain, why a gas bubble released at the bottom of a lake grows in size as it rises to the surface of the lake.
Chapter: [4.1] Fluids
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With the help of a diagram, show that water is a bad conductor of heat.
Chapter: [5] Heat and Energy
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A wooden knob and a metal latch on a door are both at room temperatures. Explain, why the latch is colder to touch.
Chapter: [5] Heat and Energy
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Complete the following sentence:
CGS units of heat is _________
Chapter: [5] Heat and Energy
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Is the following statement correct? If not, modify it suitably to make it correct. "The earth moves round the sun with uniform velocity".
Chapter: [2] Motion in One Dimension
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Name some ambient pressure diving suits.
Chapter: [4.1] Fluids
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What fact about liquid pressure does the following diagram in the following figure illustrate?
Chapter: [4.1] Fluids
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What is a manometer? How does it show whether the pressure inside a vessel connected to one arm of it, is lower or above the atmospheric pressure?
Chapter: [4.1] Fluids
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Why is an aneroid barometer called so?
Chapter: [4.1] Fluids
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What is a barometer to write two uses of a barometer?
Chapter: [4.1] Fluids
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What do you mean by relative density?
Chapter: [4.1] Fluids
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