امتحان

What is the type of the bulb in light bulb?

1

Plastic

2

Metal

3

glass

تصحيح

What is the type of the gas used in the light bulbs------

1

Argon gas

2

Hydrogen gas

3

Nitrogen gas

تصحيح

Argon gas is -----------

1

Active gas

2

Inactive gas

3

Help in burring

تصحيح

Light bulb consists of filament a nd glass bulb a nd---------

1

Base of light bulb

2

Copper wire

3

Argon gas

تصحيح

--------carries the light bulb in an upright position

1

The base of light bulb

2

Glass bulb

3

The filament

تصحيح

--------connect the light bulb to the electricity

1

The base of light bulb

2

The filament

3

Glass bulb

تصحيح

The filament made of --------

1

Gold

2

Tungsten

3

Silver

تصحيح

The fluo r escent lamp consists of --------

1

Three filament of tungsten

2

One filament of tungsten

3

Two filament of tungsten

تصحيح

The glass bulb made of -------?

1

Thin glass

2

Thick glass

3

Mix fr om plastic a nd gas

تصحيح

The main source of light now?

1

Ca ndles

2

The sun

3

Fire to r ches

تصحيح

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