A) It produces heating effect
B) It does not deflect in electric field
C) Its casts shadow
D) It produces fluorescence
Correct Answer: B
Solution :
| Cathode rays are negatively charged panicles called as electrons: |
| Cathode rays possess very high kinetic energy due to their high velocity. When these highly energetic rays fall on platinum (a metal), their kinetic energy is converted to heat energy. |
| Outside the discharge tube, if an electric field is applied, the cathode rays bend towards the positive plate. |
| Cathode rays travel in straight lines. This can be proved by an arrangement which shows that cathode rays cast shadow of the abject placed in straight line path of cathode rays. |
| In certain substances like barium platinocyanides, zinc sulphate, diamond etc., they produce fluorescence. |
| Thus, is right option. |
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