General Science

What is the best description of time period?

A time for one complete oscillation
B machine converting mechanical energy into electrical energy
C combining light nuclei with energy release
D apparent frequency change due to relative motion

Which of the following is most closely associated with mechanical energy?

A sum of kinetic and potential energy
B energy due to motion
C pressure applied to an enclosed fluid is transmitted throughout the fluid
D heat transfer by electromagnetic waves

Which of the following is most closely associated with echo?

A SI unit of electric charge
B repetition of sound caused by reflection
C splitting of a heavy nucleus with energy release
D large oscillation when driving frequency matches natural frequency

What is the best description of half-life?

A magnet produced by electric current
B opposition to electric current
C device converting light directly into electrical energy
D time required for half a radioactive sample to decay

Which statement correctly identifies inertia?

A converging spherical mirror
B work done per unit charge
C tendency of an object to resist change in its state of motion
D number of oscillations per second

What is the best description of motor?

A energy associated with position or configuration
B machine converting electrical energy into mechanical energy
C measure related to average kinetic energy of particles
D every action has an equal and opposite reaction

What is the best description of electrical power?

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

In general science, kinetic energy refers to:

A energy due to motion
B about 343 m/s in air near room temperature
C electromagnetic radiation shorter in wavelength than visible violet
D SI unit of pressure

Which of the following is most closely associated with output gap?

A heat needed to raise unit mass by one degree
B difference between actual and potential output in an economy
C long-sightedness generally corrected with a convex lens
D change in direction of light when entering another medium

In general science, momentum refers to:

A device changing AC voltage through electromagnetic induction
B V = IR under constant physical conditions
C mass multiplied by velocity
D splitting of a heavy nucleus with energy release

Which statement correctly identifies electric current?

A semiconductor device that primarily permits current in one direction
B repetition of sound caused by reflection
C rate of flow of electric charge
D safety device that melts when excessive current flows

Which of the following is most closely associated with newton?

A work done per unit charge
B number of oscillations per second
C low-resistance path to ground for fault current
D SI unit of force

Which of the following is most closely associated with Ohm law?

A about 343 m/s in air near room temperature
B region where magnetic forces can act
C mass multiplied by velocity
D V = IR under constant physical conditions

Which statement correctly identifies semiconductor?

A material with conductivity between conductor and insulator
B long-sightedness generally corrected with a convex lens
C change in direction of light when entering another medium
D heat needed to raise unit mass by one degree

In general science, resistance refers to:

A high-energy electromagnetic radiation used in medical imaging
B opposition to electric current
C SI unit of work and energy
D SI unit of frequency

Which statement correctly identifies Newton’s third law?

A heat transfer by electromagnetic waves
B every action has an equal and opposite reaction
C converging lens
D distance between corresponding points of successive waves

What is the best description of LED?

A short-sightedness generally corrected with a concave lens
B bouncing back of light from a surface
C energy transferred because of a temperature difference
D light-emitting diode

Which statement correctly identifies nuclear fusion?

A V = IR under constant physical conditions
B splitting of a heavy nucleus with energy release
C device changing AC voltage through electromagnetic induction
D combining light nuclei with energy release

What is the best description of ultrasound?

A converging spherical mirror
B sound above about 20 kHz
C mass per unit volume
D heat transfer through matter without bulk movement

Which of the following is most closely associated with sound?

A separation of white light into component colours
B work done per unit charge
C mechanical wave requiring a material medium
D number of oscillations per second

Which statement correctly identifies watt?

A every action has an equal and opposite reaction
B energy associated with position or configuration
C measure related to average kinetic energy of particles
D SI unit of power

In general science, latent heat refers to:

A circuit with multiple branches
B heat absorbed or released during a phase change without temperature change
C repetition of sound caused by reflection
D long-sightedness generally corrected with a convex lens

Which of the following is most closely associated with LED?

A light-emitting diode
B apparent frequency change due to relative motion
C combining light nuclei with energy release
D device changing AC voltage through electromagnetic induction

Which of the following is most closely associated with hypermetropia?

A distance between corresponding points of successive waves
B heat transfer by bulk movement of a fluid
C diverging spherical mirror
D long-sightedness generally corrected with a convex lens

Which statement correctly identifies output gap?

A motion under gravity alone, neglecting other forces
B difference between actual and potential output in an economy
C acceleration due to gravity, about 9.8 m/s² near Earth
D tendency of an object to resist change in its state of motion