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Physics

Physics
Conversion of sound energy into electrical energy is done by

Solar cell
Loudspeaker
Microphone
Gramophone

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Physics
A concave lens always forms

An image type which depends on object characteristics
A virtual image
An image type which depends on lens curvature
A real image

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Physics
When a barometer is rising air pressure is

Zero
Constant
Increasing
Decreasing

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Physics
A freely suspended magnet remains horizontal at

The geographic pole
The magnetic north pole
The magnetic south pole
The magnet equator

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Physics
Moving electric charge produces :

Magnetic field
Heat waves
Light rays
Sound waves

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Physics
In general, which is the cause of a sea breeze?

Pressure
Specific heat
Heat
All listed here

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