click to enlarge
answer: C
Discussion:in this kind of question u 've no choice..u need to memorize the spectrum.
Q2 : SPM2003/P1
At an airport, a passenger’s bag is placed in the baggage scanner.
The contents in the bag are examined by using:
A X-ray
B gamma rays
C ultraviolet rays
U infrared rays
ans: A
Recall back:
Electromagnetic waves
3 comments:
maybe he 1st question is b ?
yea,I think so the answer for ques 1 should be B..
yeah, at last ada jugak yg perasan..sorry may b typing error ;)
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