General Science

Which of the following is most closely associated with Newton’s third law?

A combining light nuclei with energy release
B machine converting mechanical energy into electrical energy
C rate of electrical energy transfer
D every action has an equal and opposite reaction

In general science, Newton’s third law refers to:

A every action has an equal and opposite reaction
B rate of flow of electric charge
C mechanical wave requiring a material medium
D safety device that melts when excessive current flows

What is the best description of convex lens?

A time required for half a radioactive sample to decay
B SI unit of electrical resistance
C SI unit of power
D converging lens

Which statement correctly identifies sound?

A force opposing relative motion or its tendency between surfaces
B heat needed to raise unit mass by one degree
C mechanical wave requiring a material medium
D mass multiplied by velocity

What is the best description of latent heat?

A heat absorbed or released during a phase change without temperature change
B bouncing back of light from a surface
C measure related to average kinetic energy of particles
D energy associated with position or configuration

Which statement correctly identifies newton?

A force per unit area
B SI unit of force
C heat absorbed or released during a phase change without temperature change
D separation of white light into component colours

Which of the following is most closely associated with Newton’s first law?

A work done per unit charge
B low-resistance path to ground for fault current
C an object remains at rest or in uniform straight-line motion unless acted on by a net external force
D number of oscillations per second

Which statement correctly identifies earthing?

A rate of doing work
B an object remains at rest or in uniform straight-line motion unless acted on by a net external force
C low-resistance path to ground for fault current
D point through which resultant gravitational force may be considered to act

In general science, transformer refers to:

A heat transfer by bulk movement of a fluid
B buoyant force equals the weight of displaced fluid
C device changing AC voltage through electromagnetic induction
D diverging spherical mirror

Which statement correctly identifies resistance?

A device changing AC voltage through electromagnetic induction
B opposition to electric current
C splitting of a heavy nucleus with energy release
D large oscillation when driving frequency matches natural frequency

Which statement correctly identifies friction?

A SI unit of power
B SI unit of electrical resistance
C force opposing relative motion or its tendency between surfaces
D sum of kinetic and potential energy

In general science, series circuit 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 circuit with a single current path
D about 3 × 10^8 m/s in vacuum

In general science, volt refers to:

A splitting of a heavy nucleus with energy release
B V = IR under constant physical conditions
C SI unit of potential difference
D device changing AC voltage through electromagnetic induction

Which of the following is most closely associated with wavelength?

A distance between corresponding points of successive waves
B device converting light directly into electrical energy
C magnet produced by electric current
D opposition to electric current

What is the best description of earthing?

A SI unit of force
B low-resistance path to ground for fault current
C about 3 × 10^8 m/s in vacuum
D difference between actual and potential output in an economy

Which of the following is most closely associated with pascal?

A SI unit of pressure
B material with conductivity between conductor and insulator
C repetition of sound caused by reflection
D circuit with multiple branches

Which of the following is most closely associated with reflection?

A bouncing back of light from a surface
B SI unit of frequency
C SI unit of work and energy
D motion under gravity alone, neglecting other forces

In general science, electromagnet refers to:

A increase in dimensions with temperature rise
B measure related to average kinetic energy of particles
C magnet produced by electric current
D energy associated with position or configuration

In general science, concave lens refers to:

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

In general science, Doppler effect refers to:

A energy transferred because of a temperature difference
B tendency of an object to resist change in its state of motion
C apparent frequency change due to relative motion
D acceleration due to gravity, about 9.8 m/s² near Earth

What is the best description of Ohm law?

A V = IR under constant physical conditions
B rate of electrical energy transfer
C machine converting mechanical energy into electrical energy
D combining light nuclei with energy release

Which of the following is most closely associated with convex mirror?

A energy due to motion
B net force equals rate of change of momentum; for constant mass F = ma
C diverging spherical mirror
D pressure applied to an enclosed fluid is transmitted throughout the fluid

In general science, conduction refers to:

A heat transfer through matter without bulk movement
B machine converting mechanical energy into electrical energy
C rate of electrical energy transfer
D sound above about 20 kHz

Which statement correctly identifies diode?

A semiconductor device that primarily permits current in one direction
B sound above about 20 kHz
C diverging lens
D increase in dimensions with temperature rise

What is the best description of joule?

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