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Physics

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

Zero
Variable
Same
Unity

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Physics
Which of the following is a device designed to protect electrical devices from voltage spikes?

Voltage unloader
Surge protector
Heat protector
Current unloader

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Physics
Dioptre is the unit of

Power of a lens
Sound intensity
Focal length of a lens
Light intensity

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Physics
The motion of a body around a circular path is an example of

Uniform speed, variable acceleration
Uniform velocity, variable acceleration
Uniform speed, uniform velocity
Uniform speed, variable velocity

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Physics
In a Carnot engine when heat is taken from the source, its temperature

Decreases and then remains constant
Decreases
Remains constant
Increases

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Physics
The redness in atmosphere at Sunrise and Sunset is due to :

Refraction of light
Scattering of light
Dispersion of light
Reflection of light

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MORE MCQ ON Physics

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