Skill: Advanced or complex data representation or interpretation
Here is a type of bulb
with the top half coated with material 'X'
Coating of material X
The pictures here show how the bulb looks during the DAY when it is SWITCHED OFF
and during the NIGHT when it is SWITCHED ON.
Bulb during the day
when it is switched off
Bulb during the night when
the bulb is switched on
Based on this information, the properties of which of the following are MOST similar to
those of material 'X'?
(a) glass
(b) mirror
(c) wood
(d) stone

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