Basic Concepts of Physics

Room will repeatedly become cool and hot alternatively

Room will become cooler

Room will become hotter

Room’s temperature will not change

The minimum velocity required by a projectile to escape from a particular gravitational field

The velocity of a comet

Velocity required for a satellite to move in circular orbit around earth

Velocity required for a satellite to re-enter earth’s atmosphere

Eco-ranging

Eco-sounding

Eco-acoustical

All of these

Neutral magnet

Electromagnet

U-shaped magnet

None of these

Ultraviolet

microwave

X-rays

gamma rays

Sea water

D2O

H2O

None of these

Heisenberg

Einstein

de Broglie

Schrodinger

Stars

Sun

Earth

None of these

Monochromatic

Coherent

Very Narrow

All of them

Carbon dioxide

Dust particles

Helium

Water vapour