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PHYSICS

Physics
Magnetic keepers are used to protect magnets from :

Earth's magnetic field
Demagnetization due to heating
Effect of other magnets
Self-demagnetization

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Physics
Which among the following is the fundamental quantity ?

Time
Velocity
Force
Volume

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Physics
A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance

Varies with the increase of depth of the immersion of the iron piece
Will decrease
Will increase
Does not change

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Physics
1 amu is equivalent to

931 eV
931 KeV
931 MeV
1 eV

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Physics
1 m/s equals ________ km/hr

16/5
43967
43969
18/5

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