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
The treatment of malignant cancers uses
X-Rays
Alpha Rays
Beta Rays
Gamma Rays
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
Computed Tomography (CT scans) uses
The branch of physics, concerned with the behavior of physical bodies
Optics
Mechanics
Dynamics
Relativity
X - Rays are deviated by a magnetic field or electric fields
True
False
True under special conditions
Cannot be determined
When cathode rays strike on heavy solid metals, they produce
α - Rays
β - Rays
γ- Rays
X- Rays
The term 'Modern Physics' means
New physics
Old physics
Up-to-date Physics
All the above
The cathode rays have sufficient amount of
Potential energy
Kinetic energy
Electrical energy
Gravitational energy
X-rays are widely used in
Medicine
Industries
Scientific researches
All the above fields
