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Physics

Physics
The pressure exerted by a 760 mm column of mercury at 0°C is known as

1 bar
1 pascal
1 atmosphere
1 poise

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Physics
To open a door easily, the handle should be fixed

None of these
Near the hinges
In the middle
Away from mid-point opposite to hinges

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Physics
Ohm's law is valid in case of

Semiconductor
Superconductor
Conductor
Insulator

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Physics
When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as

Echo
Beats
Resonance
Doppler effect

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Physics
Radio activity is due to

Stable electronic configu-ration
Unstable nucleus
Stable nucleus
Stable electronic configu-ration

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Physics
Large astronomical telescopes always use as objective

lens
mirror
None of these
combinations of lenses

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