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Physics

Physics
In MRI machine, which one of the following is used?

Sound wave
Ultra-sound wave
Magnetic wave
X-ray

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Physics
The quality or tone of a musical sound produced by a stringed instrument depends on

Frequency of vibration
Wave form of the sound
Length of the strings in the instrument
Amplitude of vibration

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Physics
By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?

2
1036
1012
102

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Physics
Which microscope is often used to view metal surfaces?

None of these
Scanning tunneling microscopes
Optical microscopes
Electron microscopes

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Physics
Electrical Pressure is also called

Current
Power
Voltage
Resistance

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Physics
The density of water is 1 g/cc. This is strictly valid at

4°C
25°C
100°C
0°C

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