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Physics

Physics
Sound waves do not show the phenomenon of

Diffraction
Refraction
Polarisation
Interference

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Physics
A permanent magnet can affect

None of these
Both A & B
Electromagnets
Magnets

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Physics
Boyle's law is a relationship between

Volume and temperature
Pressure and volume
Pressure and temperature
Volume and density

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Physics
Which of the following is a device designed to protect electrical devices from voltage spikes?

Heat protector
Voltage unloader
Current unloader
Surge protector

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Physics
Identify the vector quantity from the following

Time
Work
Heat
Angular momentum

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Physics
The device used to convert solar energy into electricity is

Electrochemical cell
Galvanic cell
Photovoltaic cell
Daniell cell

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