Physics
Mirage is due to:

Equal heating of different parts of the atmosphere
Unequal heating of different parts of the atmosphere
Magnetic disturbances in the atmosphere
Depletion of ozone layer in the atmosphere

ANSWER DOWNLOAD EXAMIANS APP

Physics
Superconductors are those elements

Which conduct electricity only at super-high temperatures
Whose conductivity is intermediate between metals and insulators
Which turn into insulators at very low temperatures
Whose resistance falls almost to zero at very low temperatures

ANSWER DOWNLOAD EXAMIANS APP