Tungsten is used almost exclusively for filament of incandescent lamps because tungsten has a high melting point ( $3380^{\circ}$ C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K.

True

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False

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Solution

The correct option is A True
Tungsten has a high melting point ( $3380^{\circ}$ C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K. Because of very high melting point tungsten doesn't melt. That's why in bulb or lamps we use tungsten filament.

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State true or false.
Tungsten is used almost exclusively for filament of incandescent lamps because tungsten has a high melting point ( $3380^{\circ}$ C) and becomes incandescent (i.e., emits light at a high temperature) at $2400 K$ .

Tungsten do not oxidize at high temperature. Can it be the reason for tungsten used almost exclusively for filament of electric lamps?

Q. Why is tungsten metal selected for making filaments of incandescent lamp bulbs?

Q. Question 18 (a)
Explain:
(a) Why is the tungsten used almost exclusively for filament of electric lamps?

Q. Why is Tungsten used almost exclusively for filament of electrical lamps ?

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Tungsten is used almost exclusively for filament of incandescent lamps because tungsten has a high melting point (3380∘C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K.

The correct option is A TrueTungsten has a high melting point (3380∘C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K. Because of very high melting point tungsten doesn't melt. That's why in bulb or lamps we use tungsten filament.

Tungsten is used almost exclusively for filament of incandescent lamps because tungsten has a high melting point ( $3380^{\circ}$ C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K.

The correct option is A True
Tungsten has a high melting point ( $3380^{\circ}$ C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K. Because of very high melting point tungsten doesn't melt. That's why in bulb or lamps we use tungsten filament.