WorksheetsBiophysics
Total questions: 47
Worksheet time: 35mins
Which of the following is the nature of Beta particles?
Protons
High energy electrons
Helium nucleus
High energy electromagnetic radiation
Which of the following is the emission that produced two coherent photons?
Absorption Process
Stimulated emission
Excitation process
Spontaneous emission
Which of the following is the process where the unstable nucleus loses energy by emitting radiation?
Half-life time
Radioactive decay
Beta radiation
Gamma radiation
Which of the following is the time required for the half of the atoms of a radioactive substance to decay?
Half-life time
Radioactive decay
Beta radiation
Gamma radiation
Which of the following is the solid state laser?
Diode laser
Helium-neon laser
Carbon dioxide laser
Ruby laser
Which of the following is the unit of radiation activity?
Becquerel
Watt
Joule
Torr
Which of the following is the radiation that do not effect by magnetic or electric fields?
Beta particles
Alpha particles
Gamma rays
Neutrons
The laser phenomena depends on............
Light amplification
Light minimization
Light deflection
Light diffraction
Which of the following is a push or pull upon an object and have both magnitude and directions?
Velocity
Acceleration
Force
Pressure
Which of the following is the ion gas laser?
Argon laser
Helium-neon laser
Carbon dioxide laser
Ruby laser
Which of the following is the torque?
The force per unit area
The tendency of a force to rotate an object about a pivot
The pressure applied to an enclosed fluid
Push or pull upon an object
Which of the following is one of the X-rays properties?
Affected by electric and magnetic fields
Do not expose photographic plates
Travel in straight lines
Do not cause phosphorescent substances to glow
Which of the following is the product of the lever-arm distance and the perpendicular force to the lever-arm?
Torque
Acceleration
Force
Pressure
Which of the following is the spectrum consists of a broad continuous band containing a series of sharp lines?
X-rays spectrum
amma spectrum
Alpha spectrum
Betta spectrum
Which of the following is the process that produced laser?
Absorption Process
Stimulated emission
Excitation process
Spontaneous emission
Which of the following is the condition for the translational equilibrium?
The vector sum of all external forces acting on the body is zero
The vector sum of all external forces acting on the body is greater than zero
The vector sum of all external forces acting on the body is less than zero
The lever-arm distance is zero
X-rays are produced when.........
High photons interact with matter
High energetic electrons interact with matter
High Light interact with matter
High neutrons interact with matter
Which of the following is the condition for the rotational equilibrium?
The sum of torques due to all the external forces acting on the body is greater than zero
The sum of torques due to all the external forces acting on the body is zero
The sum of torques due to all the external forces acting on the body is less than zero
The vector sum of all external forces acting on the body is greater than zero
Which of the following is the emission that produced one photon?
Absorption process
Stimulated emission
Excitation process
Spontaneous emission
Which of the following is the penetration power of alpha particles?
Reduced by several cm’s of lead
Reduced by few mm of aluminum
Stopped by paper or a few cm of air
Reduced by several meters of concrete
The light emitted from a laser is.............
Incoherent
Monochromatic
Multidirectional
Many wavelengths
Which of the following is the nature of gamma rays?
High energy electromagnetic radiation
Helium nucleus
High energy electron
Protons
Half-life of Iodine: 8.1 Days. Which of the following is the value of N/No after 6 hours?
0.98
0.78
0.88
0.68
Which of the following is the molecular gas laser?
Argon laser
Helium-neon laser
Carbon dioxide laser
Ruby laser
Which of the following is an example for contact force?
Gravitational Force
Electrical Force
Magnetic Force
Tension Force
The active medium in the laser tube is...........
Partially transmissive mirror
Solid crystals or gas
Pumping energy by optical method
High reflectance mirror
Bremsstrahlung radiation is.............
Gamma radiation
Betta radiation
X-rays radiation
Alpha radiation
Excitation mechanism in the laser tube can be produced by..........
Partially transmissive mirror
Solid crystals or gas
Pumping energy by optical method
High reflectance mirror
Which of the following is the condition for the body to be in a static equilibrium?
The body has a tendency to accelerate and to rotate
The body has no tendency to accelerate and to rotate
The body has a tendency to accelerate
The body has a tendency to rotate
Which of the following is the condition for the translational equilibrium?
The sum of forces in one direction is greater than the sum of forces in the opposite direction
The sum of forces in one direction is less than the sum of forces in the opposite direction
The vector sum of all external forces acting on the body is less than zero
The sum of forces in one direction equal the sum of forces in the opposite direction
Which of the following is one of the X-rays properties?
Unaffected by electric and magnetic fields
Do not expose photographic plates
Affected by electric and magnetic fields
Do not cause phosphorescent substances to glow
Which of the following is the condition for the rotational equilibrium?
The sum of torques due to all the external forces acting on the body is greater than zero
The sum of the clockwise moments about any pivot equal the sum of the anti-clockwise moments about that pivot
The sum of torques due to all the external forces acting on the body is less than zero
The sum of the clockwise moments about any pivot is less than the sum of the anti-clockwise moments about that pivot
The appearance of peaks in the x-ray spectrum depends on..........
Volume
Target material
Velocity
Pressure
When energy is applied to a system, the atoms in ground state level raised to a higher energy level. This process is called.............
Radiation process
diffraction process
Excitation process
Refraction process
The number of protons in the nucleus of an atom is called (a)
The light emitted from a laser is (a)
The nature of alpha particles is (a)
The total number of protons and neutrons in a nucleus iscalled (a)
The nucleus of an atom is surrounded by (a)
The process where the unstable nucleus loses energy by emitting radiation is called (a)
The time required for the half of the atoms of a radioactivesubstance to decay is called (a)
The word LASER is an acronym for (a)
The unit of radiation activity is (a)
The tendency of a force to rotate an object about a pivot is called (a)
(a) is an example of atom gas laser?
Mention the medical applications of Laser...
(a)
Mention the X-rays Properties
(a)
