General Science

Which of the following is most closely associated with nuclear fusion?

A point through which resultant gravitational force may be considered to act
B unit of energy
C combining light nuclei with energy release
D SI unit of potential difference

Which of the following is most closely associated with latent heat?

A V = IR under constant physical conditions
B heat absorbed or released during a phase change without temperature change
C splitting of a heavy nucleus with energy release
D device changing AC voltage through electromagnetic induction

What is the best description of momentum?

A maximum displacement from mean position
B heat transfer by bulk movement of a fluid
C diverging spherical mirror
D mass multiplied by velocity

In general science, ultrasound refers to:

A sound above about 20 kHz
B device changing AC voltage through electromagnetic induction
C maximum displacement from mean position
D V = IR under constant physical conditions

What is the best description of work?

A force multiplied by displacement in the direction of force
B sound below about 20 Hz
C circuit with a single current path
D short-sightedness generally corrected with a concave lens

In general science, pascal refers to:

A diverging spherical mirror
B maximum displacement from mean position
C opposition to electric current
D SI unit of pressure

Which statement correctly identifies conduction?

A heat transfer through matter without bulk movement
B mechanical wave requiring a material medium
C rate of flow of electric charge
D separation of white light into component colours

In general science, resonance refers to:

A large oscillation when driving frequency matches natural frequency
B change in momentum produced by a force acting over time
C production of emf by changing magnetic flux
D force per unit area

In general science, pressure refers to:

A difference between actual and potential output in an economy
B tendency of an object to resist change in its state of motion
C force per unit area
D acceleration due to gravity, about 9.8 m/s² near Earth

Which statement correctly identifies LED?

A diverging spherical mirror
B maximum displacement from mean position
C light-emitting diode
D opposition to electric current

Which of the following is most closely associated with Doppler effect?

A apparent frequency change due to relative motion
B diverging spherical mirror
C buoyant force equals the weight of displaced fluid
D heat transfer by bulk movement of a fluid

Which of the following is most closely associated with fuse?

A energy transferred because of a temperature difference
B safety device that melts when excessive current flows
C bouncing back of light from a surface
D acceleration due to gravity, about 9.8 m/s² near Earth

What is the best description of pascal?

A force multiplied by displacement in the direction of force
B mass per unit volume
C SI unit of pressure
D heat transfer through matter without bulk movement

Which statement correctly identifies half-life?

A SI unit of work and energy
B time required for half a radioactive sample to decay
C material with conductivity between conductor and insulator
D high-energy electromagnetic radiation used in medical imaging

In general science, frequency refers to:

A converging spherical mirror
B number of oscillations per second
C heat transfer through matter without bulk movement
D maximum displacement from mean position

In general science, concave mirror refers to:

A converging spherical mirror
B time for one complete oscillation
C electrostatic force varies with charges and inverse square of distance in vacuum
D SI unit of electric current

In general science, potential energy refers to:

A energy associated with position or configuration
B SI unit of frequency
C SI unit of work and energy
D motion under gravity alone, neglecting other forces

What is the best description of Pascal law?

A about 3 × 10^8 m/s in vacuum
B pressure applied to an enclosed fluid is transmitted throughout the fluid
C tendency of an object to resist change in its state of motion
D difference between actual and potential output in an economy

Which of the following is most closely associated with pressure?

A force per unit area
B pressure applied to an enclosed fluid is transmitted throughout the fluid
C rate of doing work
D heat transfer by electromagnetic waves

Which statement correctly identifies Newton’s second law?

A energy transferred because of a temperature difference
B bouncing back of light from a surface
C short-sightedness generally corrected with a concave lens
D net force equals rate of change of momentum; for constant mass F = ma

Which of the following is most closely associated with electrical power?

A every action has an equal and opposite reaction
B energy associated with position or configuration
C rate of electrical energy transfer
D motion under gravity alone, neglecting other forces

Which statement correctly identifies speed of sound?

A about 343 m/s in air near room temperature
B unit of energy
C spontaneous emission from unstable nuclei
D machine converting electrical energy into mechanical energy

In general science, earthing refers to:

A force opposing relative motion or its tendency between surfaces
B heat needed to raise unit mass by one degree
C low-resistance path to ground for fault current
D mass multiplied by velocity

Which statement correctly identifies power?

A semiconductor device that primarily permits current in one direction
B safety device that melts when excessive current flows
C rate of doing work
D high-energy electromagnetic radiation used in medical imaging

Which of the following is most closely associated with series circuit?

A an object remains at rest or in uniform straight-line motion unless acted on by a net external force
B rate of doing work
C circuit with a single current path
D buoyant force equals the weight of displaced fluid