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Physics

Physics
Parsec is the unit of

Time
Magnetic line
Intensity of light
Distance

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Physics
Total number of colours exists in sunlight

5
7
10
9

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Physics
If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is

Height of the liquid column
Acceleration due to gravity at the bottom of the vessel
Density of the liquid
Surface area of the bottom of the vessel

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Physics
During hot weather, the fan produces a feeling of comfort. This is because

Conductivity of air increases
Fan cools the air
Fan supplies cool air
Our perspiration eva-porates rapidly

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Physics
Convex mirror is generally used in ________

Rear view mirror
Reflector for head light
Solar cookers
Opthalmoscope

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Physics
The apparent weight of a man in a lift is less the real weight when :

The lift is going up with uniform speed
The lift is going down with uniform speed
The lift is going up with an acceleration
The lift is going down with an acceleration

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