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Why is tungsten used exclusively for making filaments of electric bulbs? |
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(a) |
Tungsten has very high melting point |
(b) |
Tungsten has very flexibility |
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(c) |
Tungsten has low rate of evaporation at high temperature |
(d) |
all of the above |
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|
Why is tungsten used exclusively for making filaments of electric bulbs? |
|
|||
|
(a) |
Tungsten has very high melting point |
(b) |
Tungsten has very flexibility |
|
|
(c) |
Tungsten has low rate of evaporation at high temperature |
(d) |
all of the above |
|