Verified Solution • 2025–26 Session moderate

QPage 352: Q2: HC Verma: Concepts of Physics - Volume 2 Electric Current through Gases Page 352: Q2 Solution: Which of the following is true for a cathode ray?

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often confuse cathode rays with electromagnetic radiation, incorrectly assuming they are electromagnetic waves or that they are not deflected by magnetic fields. Remember that cathode rays are streams of high-speed electrons (matter waves), so they possess charge and mass, allowing them to be deflected by electric and magnetic fields, unlike true electromagnetic waves like light or X-rays.

Which of the following is true for a cathode ray?

Multiple Choice Options

  • A It travels in a straight line.
  • B It emits an X-ray when it strikes a metal.
  • C It is an electromagnetic wave.
  • D It is not deflected by a magnetic field.

Step-by-Step Verified Solution

**Answer:** (a), (b). **Step-by-Step Explanation:** Cathode rays travel in straight lines (a) and emit X-rays when they strike a metal (b).

All Questions in this Chapter

QPage 351: Q1 QPage 351: Q2 QPage 351: Q3 QPage 351: Q4 QPage 351: Q5 QPage 351: Q6 QPage 351: Q7 QPage 351: Q8 QPage 351: Q9 QPage 351: Q10 QPage 352: Q1 QPage 352: Q2 QPage 352: Q3 QPage 352: Q4 QPage 352: Q5 QPage 352: Q6 QPage 352: Q7 QPages 351-352: Q1 QPages 351-352: Q2 QPages 351-352: Q3 QPages 351-352: Q4 QPages 351-352: Q5 QPages 351-352: Q6 QPages 351-352: Q7 QPages 351-352: Q8 QPages 351-352: Q9 QPages 352-354: Q1 QPages 352-354: Q2 QPages 352-354: Q3 QPages 352-354: Q4 QPages 352-354: Q5 QPages 352-354: Q6 QPages 352-354: Q7 QPages 352-354: Q8 QPages 352-354: Q9 QPages 352-354: Q10 QPages 352-354: Q11 QPages 352-354: Q12 QPages 352-354: Q13 QPages 352-354: Q14 QPages 352-354: Q15 QPages 352-354: Q16 QPages 352-354: Q17 QPages 352-354: Q18 QPages 352-354: Q19 QPages 352-354: Q20 QPages 352-354: Q21 QPages 352-354: Q22 QPages 352-354: Q23

Related Learning Resources & Exam Preparation

Chapter Practice Bank
Practice all topic-wise questions from Electric Current through Gases
Reference Textbook Solutions
Explore complete chapter exercises for HC Verma: Concepts of Physics - Volume 2
Competitive PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring