Question
Download Solution PDFThe melting point of Tungsten lies between ______ & ______ °C.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Tungsten:
- The metal tungsten is used for the filaments in incandescent bulbs.
- It has a high melting point and retains its strength when heated.
- Filaments of the light bulbs are made up of the Tungsten element.
- Its symbol is ‘W’ because of its scientific name ‘Wolfram’ and its and the atomic number 74.
EXPLANATION:
- As the resistance is less, heat energy is produced is very low which is not sufficient for an electric bulb to glow so the resistance is kept high.
- Tungsten is very resistant to corrosion and has the highest melting point (melting point = 3380 K) and the highest tensile strength of any element. Therefore option 3 is correct.
- Tungsten is used for making bulb filaments of incandescent lamps because it has the highest melting point and does not melt even while it is glowing for long hours.
NOTE:
- Light bulb filaments aren't resistive because of the tungsten.
- They're resistive because of their very long length, and very thin wire.
Last updated on Jun 26, 2025
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