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Physics

Physics
The sound produced by a bat is–

Audible
Infrasonic
Ultrasonic
Subsonic

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Physics
Which of the following is the second largest source of global energy?

Renewable Energy
None of these
Nuclear Energy
Fossil fuel

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Physics
A real gas can act as an ideal gas in

High pressure and high temperature
Low pressure and high temperature
Low pressure and low temperature
High pressure and low temperature

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Physics
1 Micron is equal to

10–15 m
10–6 m
10–9 m
10–12 m

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Physics
A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

> P
2P
< P
P

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Physics
Ocean currents are an example of

Radiation
Convection
Insulation
Conduction

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