Which one of the following is not true concerning cathode rays?
A) They impart a negative charge to metals exposed to them.
B) They originate from the negative electrode.
C) They are made up of electrons.
D) The characteristics of cathode rays depend on the material from which they are emitted.
E) They travel in straight lines in the absence of electric or magnetic fields.
Correct Answer:
Verified
Q16: _- rays consist of fast- moving electrons.
A)
Q17: The elements in groups 1A, 6A, and
Q18: The atomic number of an atom of
Q19: Isotopes are atoms that have the same
Q20: There are protons, neutrons, and electrons in
Q22: A molecule of water contains hydrogen and
Q23: In the absence of magnetic or electric
Q24: Which species is an isotope of 39Cl?
A).
Q25: Cathode rays are .
A) x- rays
B) atoms
C)
Q26: The charge on an electron was determined
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