Is this a good Riddle??!

Is this a good Riddle??

I used it as an answer to a previous Q and i wanna no if it is good!
There is a room with a light hanging from the ceiling with a bed under it. when the door is closed it is light tight. around the corner from this room are 3 light switchs, only one works, you can only enter the room once. Which switch turns it on?
You hav to say how you know which switch.
Rules
1.. No leaving door open
2.. You cannot see if the light is on or off unless you enter the room
3.. You can only have one switch on at a time
Answer
Turn on the first switch and wait 10 minutes, turn off the first switch and turn on the second. Enter the room, if the light is OFF but it is warm then the 1st switch is correct. If the light is ON then the 2nd switch is correct. If the light is OFF and cold then the 3rd switch is correct!!!
If u like gimme a star so i know!

2 weeks ago
If the light is on for 10 min it will warm up, then you turn the switch off but the light stays warm!

2 weeks ago
Note there is a bed under the light, obviously this has sumtn to do wit the Answer otherwise i would leave it out... You stand on the bed too reach the light!!!

yes it is a good riddle