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Physics

Physics
For a freely falling body, the sum of kinetic energy and potential energy is always

Variable
Unity
Zero
Same

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Physics
Acceptable noise level for human ear

= 85 db
None of these
< 85 db
> 85 db

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Physics
The temperature at which water boils depends mainly on

Density
Specific heat
Relative humidity
Air Pressure

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Physics
After long periods of use, a grey spot develops on the inside of a bulb. This is because

Dust inside the bulb condenses on the top
The tungsten filament evaporates and collects there
The heat of the bulb scorches the glass at the top
Glass undergoes a change due to the heat

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Physics
The purpose of choke in a fluorescent lamp is :

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

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Physics
What is the SI unit of Force?

Boyle
Newton
Pascal
Watt

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MORE MCQ ON Physics

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