Q.

When cathode rays strike a target of high atomic weight, they give rise to –

A. α -rays
B. β and γ rays
C. X-rays
D. positive rays
Answer» C. X-rays
Explanation: When cathode rays strike a solid target of high atomic weight and high melting point such as tungsten, molybdenum, etc, they give rise to a highly pen-etrating radiation called the X-rays (LIT Physics by Dr. P.K Aganval).
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