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Physics

Physics
Which Color has the Longest Wavelength?

Violet
Red
Yellow
White

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Physics
On the Kelvin scale, the melting point of ice is

0 K
273K
373K
100K

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Physics
An ice block with a piece of lead embeded in it floats in water. If ice melts the water level

Falls first and then rises
Rises
Falls
Remains same

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Physics
A fountain pen works on the principle of

Bernoulli's principle
Viscosity of liquids
Capillary action
Flow of liquids from higher to lower potential

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Physics
The resistance of a conductor is inversely proportional to its:

Resistivity
Length
Area of cross section
Temperature

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Physics
Outside of cooking utensils are generally left black from below because

Black surface is a good conductor of heat.
Black surface is a good absorber of heat.
Black surface is a poor conductor of heat.
It is difficult to clean daily.

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