Physics
Which of the following options correctly explains the term heat budget?

It is the amount of heat which the surface of earth receives from the sun.
It is the balance between incoming and outgoing radiation
It is the radiation from the earth in the form of long waves.
It is a mode of transfer of heat through matter by molecular activity.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Super conductors are substances that

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

ANSWER DOWNLOAD EXAMIANS APP

Physics
The bats can fly in the dark because

They have weak legs and are likely to be attacked by predators
They generate ultrasonic sound waves
They can see the objects in darkness
They generate flashes of light

ANSWER DOWNLOAD EXAMIANS APP