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Physics

Physics
If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is

500 J
0.2 J
20 J
5 J

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Physics
Tungsten is used for the manufacture of the filament of an electric bulb, because

It has a very high melting point
It is malleable
It is a good conductor
It is economical

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Physics
Acceleration is the rate of change of

Jounce
Speed
Velocity
Jerk

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Physics
Vehicle tyres are inflated properly

To go fast and save fuel.
To avoid skidding and to minimise friction
To ensure smooth running.
To allow the vehicle to take more load.

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Physics
The unit of noise pollution (level) is :

Ppm
None of these
Decibel
Decimal

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Physics
A photostat machine works on

Thermal image making
Electrostatic image making
Magnetic image making
Electromagnetic image making

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