General Science

Which of the following is most closely associated with gravitational acceleration?

A force per unit area
B mass multiplied by velocity
C region where magnetic forces can act
D acceleration due to gravity, about 9.8 m/s² near Earth

In general science, reflection refers to:

A splitting of a heavy nucleus with energy release
B bouncing back of light from a surface
C SI unit of electric charge
D large oscillation when driving frequency matches natural frequency

Which of the following is most closely associated with coulomb?

A combining light nuclei with energy release
B SI unit of electric charge
C rate of electrical energy transfer
D machine converting mechanical energy into electrical energy

Which of the following is most closely associated with electric current?

A rate of flow of electric charge
B SI unit of force
C electromagnetic radiation strongly associated with thermal radiation
D about 3 × 10^8 m/s in vacuum

What is the best description of dispersion?

A circuit with a single current path
B spontaneous emission from unstable nuclei
C machine converting electrical energy into mechanical energy
D separation of white light into component colours

Which of the following is most closely associated with electromagnetic induction?

A opposition to electric current
B maximum displacement from mean position
C diverging spherical mirror
D production of emf by changing magnetic flux

Which of the following is most closely associated with power?

A about 3 × 10^8 m/s in vacuum
B rate of doing work
C SI unit of force
D difference between actual and potential output in an economy

Which statement correctly identifies ampere?

A SI unit of electric current
B work done per unit charge
C number of oscillations per second
D converging spherical mirror

Which statement correctly identifies time period?

A time for one complete oscillation
B SI unit of force
C electromagnetic radiation strongly associated with thermal radiation
D about 3 × 10^8 m/s in vacuum

In general science, fuse refers to:

A electrostatic force varies with charges and inverse square of distance in vacuum
B force multiplied by displacement in the direction of force
C safety device that melts when excessive current flows
D mass per unit volume

What is the best description of radioactivity?

A spontaneous emission from unstable nuclei
B sound above about 20 kHz
C machine converting mechanical energy into electrical energy
D rate of electrical energy transfer

Which of the following is most closely associated with generator?

A diverging lens
B machine converting mechanical energy into electrical energy
C rate of electrical energy transfer
D sound above about 20 kHz

What is the best description of free fall?

A SI unit of potential difference
B point through which resultant gravitational force may be considered to act
C motion under gravity alone, neglecting other forces
D unit of energy

Which of the following is most closely associated with potential difference?

A SI unit of power
B work done per unit charge
C SI unit of electrical resistance
D sum of kinetic and potential energy

In general science, coulomb refers to:

A rate of flow of electric charge
B SI unit of electric charge
C safety device that melts when excessive current flows
D mechanical wave requiring a material medium

In general science, infrared refers to:

A SI unit of frequency
B every action has an equal and opposite reaction
C motion under gravity alone, neglecting other forces
D electromagnetic radiation strongly associated with thermal radiation

What is the best description of frequency?

A production of emf by changing magnetic flux
B force per unit area
C change in momentum produced by a force acting over time
D number of oscillations per second

In general science, hertz refers to:

A time required for half a radioactive sample to decay
B SI unit of power
C material with conductivity between conductor and insulator
D SI unit of frequency

In general science, output gap refers to:

A rate of doing work
B difference between actual and potential output in an economy
C heat transfer by bulk movement of a fluid
D buoyant force equals the weight of displaced fluid

Which statement correctly identifies hypermetropia?

A mass per unit volume
B electrostatic force varies with charges and inverse square of distance in vacuum
C force multiplied by displacement in the direction of force
D long-sightedness generally corrected with a convex lens

Which of the following is most closely associated with conduction?

A low-resistance path to ground for fault current
B light-emitting diode
C electromagnetic radiation strongly associated with thermal radiation
D heat transfer through matter without bulk movement

Which statement correctly identifies gravitational acceleration?

A SI unit of force
B acceleration due to gravity, about 9.8 m/s² near Earth
C about 3 × 10^8 m/s in vacuum
D electromagnetic radiation strongly associated with thermal radiation

Which of the following is most closely associated with radioactivity?

A production of emf by changing magnetic flux
B SI unit of electric charge
C spontaneous emission from unstable nuclei
D ideal oscillating bob suspended by a light string

Which statement correctly identifies Newton’s first law?

A heat absorbed or released during a phase change without temperature change
B separation of white light into component colours
C force per unit area
D an object remains at rest or in uniform straight-line motion unless acted on by a net external force

What is the best description of sound?

A point through which resultant gravitational force may be considered to act
B mechanical wave requiring a material medium
C an object remains at rest or in uniform straight-line motion unless acted on by a net external force
D rate of doing work