Consider the following statements:An ordinary light bulb has a rather short life because the:1. filament wire is not uniform.2. bulb cannot be evacuated completely.3. wires supporting the filament melt at hightemperatures.Which of the above statements are correct?

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Q:108

Consider the following statements:
An ordinary light bulb has a rather short life because the:
1. filament wire is not uniform.
2. bulb cannot be evacuated completely.
3. wires supporting the filament melt at high
temperatures.
Which of the above statements are correct?

1 and 3

2 and 3

1 and 2

1, 2 and 3

Next Question

Consider the following statements regarding a motor car battery:
1. The voltage is usually 12 V.
2. Electrolyte used is hydrochloric acid.
3. Electrodes are lead and copper.
4. Capacity is expressed in ampere-hour.
Which of the above statements are correct?

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