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Physics

Physics
Positive feedback is used in

Amplifiers
None of these
Rectifiers
Oscillators

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Physics
At what temperature do the Fahrenheit and Celsius scales give the same reading?

0 degreees
-40 degreees
32 degreees
212 degrees

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Physics
Who measured the velocity of light first ?

Galileo
Einstein
Newton
Romer

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Physics
Hot springs are heated geothermally by underlying

Water
None of these
Mitula
Magma

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Physics
For which one of the following, ''Diodes' are generally used for?

Rectification
Modulation
Amplification
Filtration

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Physics
The locomotion of insects to the source of light is called :

Phototropic
Phototactic
Hydrotropic
Thermotactic

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