All OCR A A-Level Physics Definitions Paper 1 Exam with Questions and Answers
– 100% Solved
Absorption line spectra - ✔✔✔-dark spectral lines against a continuous spectrum
Acceleration - ✔✔✔-rate of change of velocity
Angular velocity - ✔✔✔-rate of change of angular displacement
Archimede's Principle - ✔✔✔-The upthrust exerted n a body immersed in a fluid, whether fully
or partially submerged, is equal to the weight of the fluid that the body displaces
Astronomical unit - ✔✔✔-The average distance from the earth to the sun
At absolute zero.... - ✔✔✔-Internal energy is minimum
Black hole - ✔✔✔-Very dense, gravitational field so strong light cannot escape it
Boyle's Law - ✔✔✔-If the temperature and mass of a gas is constant, its pressure is inversely
proportional to its volume
Brownian motion observation and conclusion - ✔✔✔-Particles move randomly due to collisions
Brownian motion observations - ✔✔✔-Particles move randomly, smoke particles much larger
than air molecules
Centre of gravity - ✔✔✔-The point where the entire weight of an object appears to act.
Centre of mass - ✔✔✔-A point through which any externally applied force produces straight-
line motion but no rotation
, All OCR A A-Level Physics Definitions Paper 1 Exam with Questions and Answers
– 100% Solved
Chandrasekhar limit - ✔✔✔-electron degeneracy pressure is only sufficient to prevent
gravitational collapse if the core has a mass less than 1.44 solar masses
Comet - ✔✔✔-Small, irregular bodies made up of ice and dust and small pieces of rock, in orbit
around the sun
Conservation of momentum - ✔✔✔-For a system of interacting objects, the total momentum in
a specified direction remains constant, as long as no external forces act on the system
Continuous spectra - ✔✔✔-All visible frequencies or wavelengths are present.
Cosmological principle - ✔✔✔-When viewed on a large enough scale, the universe is
homogenous and isotropic, and the laws of physics are universal
Define the Newton - ✔✔✔-the force that causes a mass of 1kg to have an acceleration of 1ms^-
2 in the direction of the force
Degrees to radians conversion - ✔✔✔-Divide angle in degrees by π/180
Density - ✔✔✔-Mass per unit volume
Drag - ✔✔✔-The frictional force experienced by an object travelling through a fluid
Electron degeneracy pressure - ✔✔✔-When core of a star begins to collapse under the fore of
gravity, electrons are squeezed together which creates pressure that prevents core from further
gravitational collapse
– 100% Solved
Absorption line spectra - ✔✔✔-dark spectral lines against a continuous spectrum
Acceleration - ✔✔✔-rate of change of velocity
Angular velocity - ✔✔✔-rate of change of angular displacement
Archimede's Principle - ✔✔✔-The upthrust exerted n a body immersed in a fluid, whether fully
or partially submerged, is equal to the weight of the fluid that the body displaces
Astronomical unit - ✔✔✔-The average distance from the earth to the sun
At absolute zero.... - ✔✔✔-Internal energy is minimum
Black hole - ✔✔✔-Very dense, gravitational field so strong light cannot escape it
Boyle's Law - ✔✔✔-If the temperature and mass of a gas is constant, its pressure is inversely
proportional to its volume
Brownian motion observation and conclusion - ✔✔✔-Particles move randomly due to collisions
Brownian motion observations - ✔✔✔-Particles move randomly, smoke particles much larger
than air molecules
Centre of gravity - ✔✔✔-The point where the entire weight of an object appears to act.
Centre of mass - ✔✔✔-A point through which any externally applied force produces straight-
line motion but no rotation
, All OCR A A-Level Physics Definitions Paper 1 Exam with Questions and Answers
– 100% Solved
Chandrasekhar limit - ✔✔✔-electron degeneracy pressure is only sufficient to prevent
gravitational collapse if the core has a mass less than 1.44 solar masses
Comet - ✔✔✔-Small, irregular bodies made up of ice and dust and small pieces of rock, in orbit
around the sun
Conservation of momentum - ✔✔✔-For a system of interacting objects, the total momentum in
a specified direction remains constant, as long as no external forces act on the system
Continuous spectra - ✔✔✔-All visible frequencies or wavelengths are present.
Cosmological principle - ✔✔✔-When viewed on a large enough scale, the universe is
homogenous and isotropic, and the laws of physics are universal
Define the Newton - ✔✔✔-the force that causes a mass of 1kg to have an acceleration of 1ms^-
2 in the direction of the force
Degrees to radians conversion - ✔✔✔-Divide angle in degrees by π/180
Density - ✔✔✔-Mass per unit volume
Drag - ✔✔✔-The frictional force experienced by an object travelling through a fluid
Electron degeneracy pressure - ✔✔✔-When core of a star begins to collapse under the fore of
gravity, electrons are squeezed together which creates pressure that prevents core from further
gravitational collapse
