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Physics

Physics
Minimum number of unequal vectors which can give zero resultant are

four
three
more than four
two

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Physics
Intensity of any wave is proportional to which of the following?

Cube of amplitude
Amplitude
Square of amplitude
Square root of amplitude

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Physics
At low temperature, Lead behaves as a :

Semi conductor
Conductor
Insulator
Superconductor

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Physics
Ozone layer in the outer atmosphere helps us in

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

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Physics
Hydraulic brakes work on the principle of

Newton's law
Thomson's law
Bernoulli's theorem
Pascal's law

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Physics
Speed regulation of synchronous motor is

0.005
0.01
Zero
0.25

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