General Science

Which of the following is most closely associated with resistance?

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

Which of the following is most closely associated with resonance?

A increase in dimensions with temperature rise
B large oscillation when driving frequency matches natural frequency
C measure related to average kinetic energy of particles
D energy associated with position or configuration

Which of the following is most closely associated with myopia?

A measure related to average kinetic energy of particles
B increase in dimensions with temperature rise
C diverging lens
D short-sightedness generally corrected with a concave lens

Which of the following is most closely associated with ampere?

A magnet produced by electric current
B electromagnetic radiation shorter in wavelength than visible violet
C device converting light directly into electrical energy
D SI unit of electric current

What is the best description of semiconductor?

A material with conductivity between conductor and insulator
B rate of doing work
C heat transfer by bulk movement of a fluid
D buoyant force equals the weight of displaced fluid

What is the best description of Coulomb law?

A buoyant force equals the weight of displaced fluid
B electrostatic force varies with charges and inverse square of distance in vacuum
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

In general science, temperature refers to:

A bouncing back of light from a surface
B short-sightedness generally corrected with a concave lens
C energy transferred because of a temperature difference
D measure related to average kinetic energy of particles

In general science, infrasound refers to:

A sound below about 20 Hz
B low-resistance path to ground for fault current
C light-emitting diode
D work done per unit charge

What is the best description of resonance?

A large oscillation when driving frequency matches natural frequency
B about 343 m/s in air near room temperature
C SI unit of pressure
D electromagnetic radiation strongly associated with thermal radiation

What is the best description of solar cell?

A device converting light directly into electrical energy
B converging lens
C heat transfer by electromagnetic waves
D distance between corresponding points of successive waves

Which statement correctly identifies ultrasound?

A bouncing back of light from a surface
B repetition of sound caused by reflection
C sound above about 20 kHz
D short-sightedness generally corrected with a concave lens

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