Which of the following is not a property of cathode rays?

  • A
    They cast shadows.
  • B
    They produce a heating effect.
  • C
    They produce fluorescence.
  • D
    They do not deflect in an electric field.

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Similar Questions

The ratio of thermionic currents $(I/I_0)$ for a metal when the temperature is slowly increased from $T_0$ to $T$ is shown in the figure. ($I$ and $I_0$ are currents at $T$ and $T_0$ respectively). Which curve correctly represents this relationship?

The metal which has the highest work function among the following is:

Which one is the correct relation for thermionic emission?

What is specific charge? Write its standard value.

What is the value (magnitude) of the electric field required for field emission?

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