Physics
Super conductors are substances that

Offer high resistance to the flow of electric current
Conduct electricity at high temperature
Conduct electricity at low temperature
Offer minimum resistance to flow of electric current

ANSWER DOWNLOAD EXAMIANS APP

Physics
It is dangerous to observe Solar eclipse with naked eyes because

Ultraviolet radiations from Sun burn our retina
All radiations from sun initiate chemical reactions in eyes
Infrared radiations from sun burn our retina
Cosmic rays reach eyes more during the eclipse

ANSWER DOWNLOAD EXAMIANS APP