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Physics

Physics
A micron is equal to

0.0001 mm
0.001 mm
0.01 mm
0.1 mm

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Physics
The velocity of sound in moist air is more than in dry air because the moist air has

Less density than dry air.
More pressure than dry air.
More density than dry air.
Less pressure than dry air.

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Physics
When a piece of stone is immersed in water, it displaces water of equal

Specific gravity
Density
Mass
Volume

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Physics
In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalent to

100 N
0.1 N
10 N
1 N

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Physics
The magnitude of buoyant force depends on the ________ of the fluid.

Temperature
Volume
Mass
Density

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Physics
Which of the following is the cleanest source of energy?

Biofuel
Fossil fuel
Wind energy
Nuclear power

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