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Physics

Physics
At what temperature (in Fahrenheit) pure water freezes?

37
32
48

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Physics
The temperature which has the same reading on both Fahrenheit and Celsius scales is

–40°
0°
32°
40°

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Physics
When a steel ball is placed on the surface of mercury, it does not sink because

Mercury is a semisolid
Of the high viscosity of mercury
Of the surface tension of mercury
The density of mercury is greater than that of steel

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Physics
According to special theory of relativity the mass of a particle

Is independent of its velocity.
Increases with increase in velocity with respect to an observer.
Decreases with decrease in velocity.
Decreases with increase in velocity.

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Physics
Which conservation principle is applicable in the case of the motion of a rocket?

Conservation of charge
Conservation of energy
Conservation of momentum
Conservation of mass

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Physics
The final image in a simple microscope is

Real, diminished and inverted
Real, magnified and erect
Virtual, magnified and erect
Virtual, diminished and erect

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