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Physics

Physics
Rate of change of displacement is known as ________

Speed
Velocity
Distance
Acceleration

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Physics
The reflector of a search light is a :

Plane mirror
Cylindrical mirror
Concave mirror
Convex mirror

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Physics
The shape of our milky way galaxy is

None of these
Elliptical
Circular
Spiral

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Physics
In a Carnot engine when heat is taken from the source, its temperature

Decreases and then remains constant
Decreases
Remains constant
Increases

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Physics
Sources of geothermal power are

Earth's heat
Both A & B
None of these
Water

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Physics
Which of the following is used for regulated electric supply ?

Junction diode
Tunnel diode
Gun diode
Zener diode

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