Meera shifted to a new house and was fixing light bulbs in her apartment. One of the three bulbs she fixed did not light up. Upon testing she realised it was a case of fused bulb. So, she bought a new one which then lit up perfectly. Select the correct option that describes what happened to the fused bulb.
1
The switch for the bulb was not turned on
2
Meera did not fix the bulb to the holder properly
3
The filament inside it was broken
4
There was no connection between the bulb holder and the switch