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Physics: How smart are you?

got the smoke detector one wrong since i didnt know anything about the technology.

I was torn between alpha and infra-red.
 
8/10

I missed the smoke detector one and the mass one.

Those weren't the type of questions I was expecting in a physics test though for some reason.. well, a couple of them were, but in general.
 
It's all about specifics, bob!

Ionization detectors use 1 microcurie of Americium-241 that emits alpha particles.
Photoelectric detectors use a gallium arsenide light emitting diode at 940 nanometers for simple detection.

So the way the question was phrased, alpha and IR are correct answers. 🙂
 
10/10... rather easy, I thought. I hesitated on the colors of the wires. I'm too used to black, white, and green.
 
8/10 missed the smoke dector and the wires, ive never wired a plug in my life and we didnt learn that in electronics
 
lol at bbc's water down physics quiz...

10/10 - i used to do control system engineering & installation so I got the wiring question right.
 
What does the order of the planets have to do with physics? That's an astronomy question, yo.
 
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