Latest campus Aptitude Question SOLUTION: Q. There is a bulb inside the room and tree switches are out side the room. you have to find the switch connected to bulb by only once going inside the room.

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(#M40010156) CAMPUS question logical puzzle Keep an EYE

Q. There is a bulb inside the room and tree switches are out side the room. you have to find the switch connected to bulb by only once going inside the room.

Asked In campus vishnu (11 years ago)

Solved Vignesh Read Solution (2)

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Vignesh  (11 years ago)

Turn 1st light switch on, wait a few minutes, then turn it off and turn 2nd light switch on. Go into the room and feel the light bulbs. The one that's still warm is connected to the switch that you first turned on, the one that is on was the second switch you turned on, and the last bulb is controlled by the switch that you didn't touch.

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Preetham  (10 years ago)

switch on the first switch, let it be on for a while, now switch it off and switch on the 2nd switch go inside: if bulb is glowing-switch 2, if bulb is not glowing but hot-switch 1, if bulb is not glowing and not hot-switch 3

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