3 Switches and 1 bulb | logic Puzzle

3 switches and 1 bulb.

 

There are 3 switches in the ground floor and in 1^st floor, there is a bulb. One of these switches belongs to that light bulb. A watchman in the ground floor wants to know which is the switch for the bulb. The condition is “there is only one chance to visit the room”. Can you help him?

{Hind: as there is only one chance to go to room, you have to do something in the SWITCHES}

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Simple, turn ON the first switch for a 10mins and turn it OFF. Now immediately turn ON the 2^nd switch and go to the light room.

If the bulb is bright, its switch is the 2^nd switch. If it is not bright, simply touch it. Now if the bulb is hot, its switch is the 1^st switch; otherwise it is the 3^rd switch!

HAVE A NICE DAY.