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Physics

Physics
The surface tension of water on adding detergent to it

Increases
No change
Becomes zero
Decreases

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Physics
For a body moving with non-uniform velocity and uniform acceleration

Displacement – Time graph is non-linear
Velocity – Time graph is nonlinear
Velocity – Time graph is linear
Displacement – Time graph is linear

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Physics
Which of the following features of a tunnel diode is its drawback

Instability due to negative resistance
Very wide temperature range of operations
Very low power consumptions
Extremely high frequency response

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Physics
Which one among the following components is used as an amplifying device?

Transformer
Transistor
Diode
Capacitor

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Physics
A person lifts luggage of 20 kg from the ground and puts it on his head 2m above the ground. Calculate the work done by him. (g = 10 )

400J
40J
20 J
200J

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Physics
An Electric generator is based on which of the following scientific principles?

Laws of Thermodynamics
Super Conductivity
Faraday's law of Electromagnetic Induction
Newton's Law of Motion

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