Physics 9702 A2 Level Definitions
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verified answers latest update 2025/2026
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Absolute Zero - CORRECT ANSWERS The theoretical temperature at which the molecules of a
substance have the lowest energy and hence the substance has minimum internal energy and no kinetic
energy
acoustic impedance - CORRECT ANSWERS product of density of medium and speed of sound in
medium
Activity - CORRECT ANSWERS The number of atoms of a radioactive substance that decay per
unit time.
amplitude modulation - CORRECT ANSWERS amplitude of carrier wave varies in synchrony
with the displacement of the information signal
Analogue signal - CORRECT ANSWERS data varies continuously with time and can have any
value between two limits
Angular Velocity - CORRECT ANSWERS the rate of change of angular displacement with respect
to time swept out by the radius
Attenuation - CORRECT ANSWERS gradual reduction or loss in signal power or energy
Avogadro constant - CORRECT ANSWERS number of atoms of carbon-12 in 0.012 kg of carbon-
12
, Bandwidth - CORRECT ANSWERS the range of frequencies that can be amplified by the same
amount of an operational amplifier
Binding Energy - CORRECT ANSWERS The amount of energy needed to split a nucleus
completely into its individual nucleons.
Binding Energy per Nucleon - CORRECT ANSWERS Binding energy divided by the mass or
nucleon number of the nucleus.
capacitance - CORRECT ANSWERS ratio of charge on body and its potential
Centripetal Acceleration - CORRECT ANSWERS Acceleration which is always perpendicular to
the velocity and always acts towards the centre of the circular motion.
Centripetal Force - CORRECT ANSWERS The resultant perpendicular force acting on an object
moving in circular motion
Coaxial cables - CORRECT ANSWERS a pair of wires arranged so that one wire is shrouded by
the other
contrast - CORRECT ANSWERS difference blackening in different regions due to different
absorption coefficient
Coulomb's Law - CORRECT ANSWERS The force between two point charges is directly
proportional to the product of the charges and inversely proportional to the square of the distance
between the charges.
cross-talk - CORRECT ANSWERS picking up of signal in one cable from a second nearby cable
questions and answers 100%Correctly
verified answers latest update 2025/2026
RATED A+
Absolute Zero - CORRECT ANSWERS The theoretical temperature at which the molecules of a
substance have the lowest energy and hence the substance has minimum internal energy and no kinetic
energy
acoustic impedance - CORRECT ANSWERS product of density of medium and speed of sound in
medium
Activity - CORRECT ANSWERS The number of atoms of a radioactive substance that decay per
unit time.
amplitude modulation - CORRECT ANSWERS amplitude of carrier wave varies in synchrony
with the displacement of the information signal
Analogue signal - CORRECT ANSWERS data varies continuously with time and can have any
value between two limits
Angular Velocity - CORRECT ANSWERS the rate of change of angular displacement with respect
to time swept out by the radius
Attenuation - CORRECT ANSWERS gradual reduction or loss in signal power or energy
Avogadro constant - CORRECT ANSWERS number of atoms of carbon-12 in 0.012 kg of carbon-
12
, Bandwidth - CORRECT ANSWERS the range of frequencies that can be amplified by the same
amount of an operational amplifier
Binding Energy - CORRECT ANSWERS The amount of energy needed to split a nucleus
completely into its individual nucleons.
Binding Energy per Nucleon - CORRECT ANSWERS Binding energy divided by the mass or
nucleon number of the nucleus.
capacitance - CORRECT ANSWERS ratio of charge on body and its potential
Centripetal Acceleration - CORRECT ANSWERS Acceleration which is always perpendicular to
the velocity and always acts towards the centre of the circular motion.
Centripetal Force - CORRECT ANSWERS The resultant perpendicular force acting on an object
moving in circular motion
Coaxial cables - CORRECT ANSWERS a pair of wires arranged so that one wire is shrouded by
the other
contrast - CORRECT ANSWERS difference blackening in different regions due to different
absorption coefficient
Coulomb's Law - CORRECT ANSWERS The force between two point charges is directly
proportional to the product of the charges and inversely proportional to the square of the distance
between the charges.
cross-talk - CORRECT ANSWERS picking up of signal in one cable from a second nearby cable
