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Physics

Physics
The washing machine works on the principle of

Reverse osmosis
Diffusion
Dialysis
Centrifugation

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Physics
Which of the following is a compound machine?

Knife
Ramp
Screw
Bicycle

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Physics
The spring constant of a spring depends on its

Material only
Thickness, its diameter and its material
Length and its diameter
Length only

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Physics
Mercury is commonly used as a thermometric fluid rather than water because

specific heat of mercury is more than water
specific heat of mercury is less than water
mercury has greater visibility than water
density of mercury is more than the water

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Physics
The surface tension of water on adding detergent to it

Decreases
No change
Increases
Becomes zero

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

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

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MORE MCQ ON Physics

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