Cathode rays are produced, when
Pressure inside the discharge tube is nearly 0.01 mm of Hg
Pressure inside the discharge tube is nearly 1 mm of Hg
Pressure inside the discharge tube is nearly 5 mm of Hg
Pressure inside the discharge tube is nearly 11 mm of Hg
The term 'Modern Physics' means
New physics
Old physics
Up-to-date Physics
All the above
Cathode rays are made up of fast moving
Electrons
Protons
Nutrons
Atoms
X - Rays are deviated by a magnetic field or electric fields
True
False
True under special conditions
Cannot be determined
A discharge tube is useful in the study of
Conduction of electricity through solids
Conduction of electricity through liquids
Conduction of electricity through gases
Conduction of electricity through plastic
X-Rays donot show
Refraction
Rectilinear propagation
Ionisation
Penetration
When cathode rays strike on heavy solid metals, they produce
α - Rays
β - Rays
γ- Rays
X- Rays
The branch of physics that deals with the study of light and its properties is called
Optics
Mechanics
Dynamics
Electronics
Gases become conductors at
Very low pressures and high electric potentials
Very high pressures and high electric potentials
Very high pressures and low electric potentials
Never
Computed Tomography (CT scans) uses
Alpha Rays
Beta Rays
Gamma Rays
X-Rays
