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Which of the following is not the property of cathode rays : -
A
It produces heating effect
B
It does not deflect in electric field
C
It casts shadow
D
It produces fluorescence
Detailed Solution
Cathode rays are streams of fast-moving electrons.
They travel in straight lines and cast shadows of objects placed in their path; they produce fluorescence when they strike certain materials; and they heat objects on which they fall.
Being negatively charged, they are deflected by electric and magnetic fields.
So the statement that is not a property of cathode rays is: it does not deflect in an electric field.
They travel in straight lines and cast shadows of objects placed in their path; they produce fluorescence when they strike certain materials; and they heat objects on which they fall.
Being negatively charged, they are deflected by electric and magnetic fields.
So the statement that is not a property of cathode rays is: it does not deflect in an electric field.