Multiple choice

Which of the following properties should the filament of an incandescent bulb have?

a. High melting point b. High thermal resistance c. Reactive towards other gases d. Corrosion free

  1. Only a and c

  2. Only b and d

  3. Only a, b and d

  4. Only a, b and c

  5. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct. All the given properties should be there in the filament of an incandescent bulb, so that the tungsten filament can be used for a long time.

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