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Physics

Physics
Which of the following has the lowest frequency?

Ultra violet rays
Xrays
Visible light
Gamma rays

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Physics
The electric current in a metal wire is due to the flow of -

Protons
Electrons
Ions
Holes

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Physics
If electric resistance is to be decreased, then the number of resistances should be connected in ________

Parallel
Series
Mixed arrangement
None of these

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Physics
Anemometer is used to measure

Wind direction
Wind velocity
Pressure gradient
Wind speed and time

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Physics
What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?

Remains constant
Increases exponentially
None of these
Becomes zero

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Physics
Angle of friction and angle of repose are

Not equal to each other
Proportional to each other
Equal to each other
None of these

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