Cathode rays causes an object placed behind a perforated ...
Cathode rays causes an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays?
are positively charged
are negatively charged
have mass
travel in straight lines
Correct answer is D
Cathode rays travel in a straight line and can cast sharp shadows.
Cathode rays are negatively charged.
Electric field and magnetic field deflect cathode rays.
The group to which elements belong in the periodic table is determined by the number? ...
The following substances are ores of metals except ...
Which of the following is an ore of aluminium? ...
What is the chemical symbol for Berkelium? ...
Oxygen-demanding waste are considered to be a water pollutant because they? ...
Which of the following substances is a peroxide? ...
Which of the following substances is a heavy chemical? ...
The following salts dissolve readily in cold water except...