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Basic Concepts of Physics
When an electric current passes through atomic gas under reduced pressure, the spectra observed is
Continuous
Line
Band
None of these
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Basic Concepts of Physics
Doppler affect can be used to calculate the speeds of
Planets
Distant stars
Galaxies
All of these
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Basic Concepts of Physics
Which of the following is a good conductor of heat and electricity?
Diamond
Anthracite
Granite
Graphite
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Basic Concepts of Physics
Good conductors have many loose bounds
Atoms
protons
Molecules
electrons
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Basic Concepts of Physics
The body oscillates due to a
Applied force
Restoring force
Frictional force
None of these
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Basic Concepts of Physics
Restoring force is the
Opposing force
Frictional force
Elastic force
All of these
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Basic Concepts of Physics
His theory, simplified, was that the electrons in the atom move in precisely determined orbits.
Pauli
Bohr
Aufbau
Hertz
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Basic Concepts of Physics
The Heisenberg Uncertainty Principle states that it is impossible to determine accurately what of fast moving particles simultaneously?
Position and quanta
Principal and secondary quantum numbers
Electrostatic attraction
Position and momentum
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Basic Concepts of Physics
Which is the densest planet of our solar system?
Sun
Jupiter
Mercury
Earth
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Basic Concepts of Physics
In cold countries glycerol is added to water in car radiators as it helps to
Lower the specific heat of water
Lower the viscosity of water
Lower the freezing point of water
Improve the lubricity
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