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Physics

Physics
Speed regulation of synchronous motor is

0.01
Zero
0.25
0.005

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Physics
Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

ultraviolet light
X-rays
radio waves
visible light

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Physics
Rise of oil a wick is due to

Density of the oil
Viscosity of the oil
Surface tension of the oil
Pressure of the oil

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Physics
When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an

Amplifier
Conductor
Oscillator
Rectifier

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Physics
Which of these is true of all simple machines?

Work input > work output
Both A & B
These make work easier
None of these

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Physics
The tidal waves on sea is mainly due to

None of these
Gravitational Effect of Sun on Earth
Gravitational Effect of Moon on Earth
Gravitational Effect of Earth on Moon

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MORE MCQ ON Physics

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