Which one of the following is not true concerning cathode rays?
A) They originate from the negative electrode.
B) They travel in straight lines in the absence of electric or magnetic fields.
C) They impart a negative charge to metals exposed to them.
D) They are made up of electrons.
E) The characteristics of cathode rays depend on the material from which they are emitted.
Question 2
The study of the effects of poisons, their detection and identification and their antidotes is known as
A) alkaloidism.
B) carcinogenic testing.
C) berylliosis.
D) toxicology.
true story
The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
Computed tomography (CT) uses X-rays to create a CT scan of the brain.
(A) In hyperopia, light rays focus behind the retina, making it difficult to focus on objects at ...
True Dover Sole
Silver Halide Reaction in X-Rays