Physics > 2008 > 46
WASSCE
Both γ rays and X-rays
I. can be produced by thermionic emission
II. have low frequencies
III, have short wavelengths
Which of the statements above is/are correct?
I. can be produced by thermionic emission
II. have low frequencies
III, have short wavelengths
Which of the statements above is/are correct?
A.
I only
B.
II only
C.
III only
D.
I and III only
Answer: C
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