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Physics

Physics
Electric Motor converts ________ energy to mechanical energy

Electrical
Mechanical
Chemical
Sound

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Physics
Which of the following is the unit of perceived loudness of sound ?

Phon
Decibel
Hertz
Sone

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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?

None of these
Becomes zero
Remains constant
Increases exponentially

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Physics
Energy that is produced commercially from coal is called

Thermal energy
Potential energy
Kinetic energy
Light energy

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Physics
Momentum is measured as the product of :

Mass and force
Mass and acceleration
Mass and velocity
Mass and inertia

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Physics
Which of the following has the lowest frequency?

Gamma rays
Ultra violet rays
Xrays
Visible light

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