Electronics -… | NUST Entrance Test Physics

An LED can be made from:

Difficulty: Easy

A:

Silicon

B:

Gallium arsenide

C:

Gallium arsenide phosphide

D:

Both b and c

The diode used for the fast detection of light is:

Difficulty: Easy

A:

Light emitting diode

B:

Photodiode

C:

Photo voltaic cell

D:

Leclanche cell

A diode which can turn its current ON and OFF in nano seconds is called:

Difficulty: Easy

A:

LED

B:

Photodiode

C:

An ordinary diode

D:

Both a and b

Continue studying