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Physics

Physics
The waves used in sonography are

Infra-red waves
Sound waves
Ultrasonic waves
Micro waves

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Physics
Knot is a measure of

Solar radiation
The curvature of spherical objects
Intensity of earthquake shock
The speed of ship

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Physics
Ozone layer in the outer atmosphere helps us in

Absorbing UV radiations
Reflecting radio waves and makes radio communication possible
Regulating the temperature of atmosphere
Absorbing cosmic ray particles

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Physics
Rate at which velocity changes over time?

Acceleration
Displacement
Speed
Jerk

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Physics
The distance between node and adjacent antinode is 30 cm. The wavelength is

120 cm.
30 cm.
60 cm.
90 cm.

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Physics
Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen?

Both will reach the same height
The lighter mass will reach greater height
The heavier mass will reach greater height
Any of them may reach greater height

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