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Physics

Physics
The minimum number of geostationary satellites needed for uninterrupted global coverage is :

3
4
2
1

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Physics
Curie point is the temperature at which

A metal loses magnetic properties.
A metal loses conductivity
Transmutation of metal occurs.
Matter becomes radioactive

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Physics
When hot liquid is poured into a thick glass tumbler, it cracks because glass :

Has high temperature coefficient of expansion
Has a very low specific heat
Is a bad conductor of heat so only inner surface expands
Has low temperature coefficient of expansion

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Physics
In a water lifting electric pump, we convert

Kinetic energy into Potential energy
Electrical energy into Potential energy
Kinetic energy into Electrical energy
Electrical energy into Kinetic energy

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Physics
The radiation initially produced in fluorescent tube is

Ultraviolet
X-rays
Microwaves
Infrared

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Physics
The transport phenomenon occurs only in ________ state of a gas and is ________

Equilibrium, reversible
Equilibrium, irreversible
Non-equilibrium, reversible
Non-equilibrium, irreversible

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