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Physics

Physics
Materials that allow electricity to flow are called

Stimulators
Conductors
Insulators
Electron flows

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Physics
In SONAR which kind of wave is used?

Ultrasonic
Infrasonic
Radio
Audible sound

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Physics
Rectifiers are used to convert:

Low voltage to high voltage
Alternating current to Direct current
High voltage to low voltage
Direct current to Alternating current

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Physics
Liquids and gases never show

Diamagnetic property
Paramagnetic property
Electromagnetic property
Ferromagnetic property

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Physics
When an electric bulb breaks, there is an explosive sound. That is due to

None of these
The compressed gases inside rushing out suddenly
The air outside rushing in to fill the vacuum inside the bulb
The chemical reaction between the gases inside the bulb

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Physics
Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

4.33 diopters
12.33 diopters
-4.33 diopters
-12.33 diopters

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