Quiz1

Metals are good conductors of electricity because

• they contain free electrons

• the atoms are lightly packed

• they have high melting point

• all of the above

Yong's modulus is a property of

• Gas only

• Liquid only

• Solid only

• Both solid and liquid

What is the full form of LED?

• Light emitting diode

• Light emitted diode

• Light emission diode

• None of these

A charged ruler attracts bits of paper due to :

• gravitational force

• magnetic force

• electrostatic force

• frictional force