Post-UTME Physics 2018 Objective — Question 10
Question 10 of 20 from the Post-UTME Screening (Post-UTME) Physics 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following is TRUE of cathode rays? I. They travel in straight lines. II. They can be deflected by electric and magnetic fields. III. They are negatively charged particles called electrons.
- A. I and II only
- B. I and III only
- C. II and III only
- D. I, II and IIICorrect
Explanation
All three statements correctly describe cathode rays: they travel in straight lines, can be deflected by electric/magnetic fields, and are streams of electrons.
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