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Question: Answered & Verified by Expert
Cathode rays are similar to visible light rays in that
PhysicsDual Nature of MatterJEE Main
Options:
  • A they both can be deflected by electric and magnetic fields.
  • B they both have a definite magnitude of wavelength.
  • C they both can ionise a gas through which they pass.
  • D they both can expose a photographic plate.
Solution:
1805 Upvotes Verified Answer
The correct answer is: they both can expose a photographic plate.

Light consists of photons and cathode rays consist of electrons. So, both rays can act like particles. However, both affect the photographic plate.

The photographic plates can detect the radiation produced by radioactive substances.

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