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Physics

Physics
Magnetic keepers are pieces of

Cobalt
Nickel
Steel
Soft iron

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Physics
Magnetic field lines about a current-carrying wire

Circle the wire in closed loops
None of these
Extend radially from the wire
Both of these

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Physics
Contact force is another name for ________

Friction
Electrostatic force
Muscular force
Magnetic force

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Physics
To measure the speed of an approaching car a police officer shines

Microwaves on it
Light waves on it
Ultra high frequency waves on it
Radio waves on it

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Physics
Light beam which is highly directional is called:

Laser
Eraser
Grazer
Maser

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Physics
For a ray of light to suffer total internal reflection it has to pass from :

Glass to water
Air to water
Air to glass
Water to glass

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MORE MCQ ON Physics

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