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11. Dual nature of radiation and matter — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics11. Dual nature of radiation and matter1 Mark
MCQ
Cathode rays and canal rays produced in a certain discharge tube are deflected in the same direction if
  • ✓
    A magnetic field is applied normally
  • B
    An electric field is applied normally
  • C
    An electric field is applied tangentially
  • D
    A magnetic field is applied tangentially
✓

Answer

Correct option: A.
A magnetic field is applied normally
a
(a)In discharge tube cathode rays (a beam of negative particles) and canal rays (positive rays) moves opposite to each other. They will experience a magnetic force in the same direction, if a normal magnetic field is switched on

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