General Science

What is the best description of simple pendulum?

A ideal oscillating bob suspended by a light string
B circuit with multiple branches
C material with conductivity between conductor and insulator
D time required for half a radioactive sample to decay

Which statement correctly identifies hertz?

A device converting light directly into electrical energy
B SI unit of frequency
C opposition to electric current
D magnet produced by electric current

Which statement correctly identifies heat?

A change in direction of light when entering another medium
B heat needed to raise unit mass by one degree
C acceleration due to gravity, about 9.8 m/s² near Earth
D energy transferred because of a temperature difference

Which statement correctly identifies potential energy?

A energy associated with position or configuration
B SI unit of electric charge
C splitting of a heavy nucleus with energy release
D large oscillation when driving frequency matches natural frequency

In general science, generator refers to:

A machine converting mechanical energy into electrical energy
B heat absorbed or released during a phase change without temperature change
C separation of white light into component colours
D mechanical wave requiring a material medium

Which of the following is most closely associated with inertia?

A magnet produced by electric current
B tendency of an object to resist change in its state of motion
C electromagnetic radiation shorter in wavelength than visible violet
D device converting light directly into electrical energy

In general science, half-life refers to:

A apparent frequency change due to relative motion
B SI unit of electric current
C time for one complete oscillation
D time required for half a radioactive sample to decay

Which statement correctly identifies convex mirror?

A unit of energy
B SI unit of potential difference
C diverging spherical mirror
D point through which resultant gravitational force may be considered to act

What is the best description of Newton’s first law?

A energy due to motion
B net force equals rate of change of momentum; for constant mass F = ma
C an object remains at rest or in uniform straight-line motion unless acted on by a net external force
D pressure applied to an enclosed fluid is transmitted throughout the fluid

In general science, specific heat capacity refers to:

A number of oscillations per second
B work done per unit charge
C heat needed to raise unit mass by one degree
D converging spherical mirror

Which statement correctly identifies nuclear fission?

A circuit with a single current path
B sound below about 20 Hz
C machine converting electrical energy into mechanical energy
D splitting of a heavy nucleus with energy release

In general science, magnetic field refers to:

A region where magnetic forces can act
B heat absorbed or released during a phase change without temperature change
C separation of white light into component colours
D force per unit area

What is the best description of Newton’s third law?

A force opposing relative motion or its tendency between surfaces
B heat needed to raise unit mass by one degree
C change in direction of light when entering another medium
D every action has an equal and opposite reaction

Which statement correctly identifies magnetic field?

A pressure applied to an enclosed fluid is transmitted throughout the fluid
B energy due to motion
C net force equals rate of change of momentum; for constant mass F = ma
D region where magnetic forces can act

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