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Physics

Physics
Which of the metals has the maximum thermal conductivity?

Copper
Iron
Silver
Aluminium

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Physics
A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be :

(7/3)f
(4/3)f
F
(3/4)f

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Physics
Name the process of production of energy in the Sun

Nuclear fusion
Ionization
Nuclear fission
Radioactivity

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Physics
The strength of an electromagnet can be increased by

All of these
Increasing the length of the coiled wire
Increasing the number of turns
Increasing current supply

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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
Isaac Newton
Michael Faraday
James Clerk Maxwell

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Physics
A spherical ball made of steel when dropped in mercury container

Will be on the surface of mercury
Will dissolve in mercury
Will be partly immersed mercury
Sink in mercury

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