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Physics

Physics
Earliest thermometer was developed by

Kelvin
Fahrenheit
Galileo
Celsius

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Physics
What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ?

All ice will melt
All water will become ice
Only some ice will melt
No change will happen

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

None of these
Renewable Energy
Nuclear Energy
Fossil fuel

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Physics
The frequency of direct current is ________

Zero
60 HZ
50 HZ
100 HZ

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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
-12.33 diopters
4.33 diopters

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Physics
The purpose of choke in a fluorescent lamp is :

Ro decrease the voltage momentarily
To decrease the current flow
To decrease the resistance
To increase the current flow

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