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Physics

Physics
The temperature of a liquid is 32° F. What is its temperature in Celsius scale?

0° C
32° C
100° C
212° C

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Physics
Which of these is true of all simple machines?

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

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Physics
Who among the following is credited to work for the unification of electricity, magnetism and optics field of Physics?

Haris Christian Oersted
James Clerk Maxwell
Michael Faraday
Isaac Newton

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Physics
Red light is used for signals because it has

Long wavelength
Low refraction in the medium
High intensity
High frequency

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

Square of amplitude
Square root of amplitude
Cube of amplitude
Amplitude

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Physics
A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ?

Dacrease
Remain constant
Increase
Will increase first and then dcrease

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