Physics
Which one among the following components can not be developed within an ''integrated circuit'?

Diode
Transistor
Triode
Transformer

ANSWER DOWNLOAD EXAMIANS APP

Physics
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor

Can be of any shape
Should be made of a good conductor but can be of any shape
Should be in the form of a vertical rod
Should be made of a good conductor like copper with sharp-pointed edges

ANSWER DOWNLOAD EXAMIANS APP

Physics
When a piece of pure silicon is doped with aluminium, then

The doped silicon piece will become n-type
The doped silicon piece will become p-type
The resistivity of the doped silicon piece will increase
The conductivity of the doped silicon piece will remain the same

ANSWER DOWNLOAD EXAMIANS APP

Physics
The earth is a

Good reflector of heat
Good absorber and good radiator of heat
Bad absorber and bad radiator of heat
Non-absorber of heat

ANSWER DOWNLOAD EXAMIANS APP

Physics
Indicate the false statement about the resistance of a wire

It is directly proportional to the area of cross-section of wire
It depends on material of wire
Resistance of metallic wire increases with increase in temperature
It is directly proportional to the length of wire

ANSWER DOWNLOAD EXAMIANS APP