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Physics

Physics
Ultrasound devices operate with minimum frequency from

35 kHz
45 kHz
20kHz
60 kHz

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Physics
A simple microscope consists of :

A long focus concave lens
A short focus concave lens
A long focus convex lens
A short focus convex lens

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Physics
At hill stations, the boiling point of water will be

Equal to the melting point of ice
More than that at sea level
Less than that at sea level
Same as at sea level

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Physics
A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an

Ultrasonic wave
Infrasonic wave
Audible wave
Microwave

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Physics
The function of ball bearings in a wheel is :

To convert static friction into kinetic friction
To convert kinetic friction into rolling friction
Just for convenience
To increase friction

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Physics
'Therm' is the unit of

Heat
Power
Light
Distance

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MORE MCQ ON Physics

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