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Q.

Consider the following statements : An ordinary light bulb has a rather short life because the:

I. filament wire is not uniform.
II. bulb cannot be evacuated completely.
III. wires supporting the filament melt at high temperature.

Which of the above statements are correct ?

A I and III
B II and III
C I and II
D I, II and III
Answer & Explanation
Option: [D]

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