General Science

What is the best description of concave mirror?

A device changing AC voltage through electromagnetic induction
B large oscillation when driving frequency matches natural frequency
C splitting of a heavy nucleus with energy release
D converging spherical mirror

In general science, free fall refers to:

A measure related to average kinetic energy of particles
B every action has an equal and opposite reaction
C energy associated with position or configuration
D motion under gravity alone, neglecting other forces

What is the best description of output gap?

A ideal oscillating bob suspended by a light string
B electrostatic force varies with charges and inverse square of distance in vacuum
C difference between actual and potential output in an economy
D SI unit of electric charge

In general science, radiation refers to:

A heat transfer by electromagnetic waves
B semiconductor device that primarily permits current in one direction
C safety device that melts when excessive current flows
D high-energy electromagnetic radiation used in medical imaging

Which of the following is most closely associated with semiconductor?

A material with conductivity between conductor and insulator
B light-emitting diode
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 diode?

A circuit with a single current path
B time required for half a radioactive sample to decay
C machine converting electrical energy into mechanical energy
D semiconductor device that primarily permits current in one direction

Which statement correctly identifies myopia?

A sum of kinetic and potential energy
B net force equals rate of change of momentum; for constant mass F = ma
C energy due to motion
D short-sightedness generally corrected with a concave lens

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

A net force equals rate of change of momentum; for constant mass F = ma
B diverging spherical mirror
C opposition to electric current
D maximum displacement from mean position

Which statement correctly identifies ultraviolet?

A difference between actual and potential output in an economy
B about 3 × 10^8 m/s in vacuum
C electromagnetic radiation shorter in wavelength than visible violet
D SI unit of force

Which statement correctly identifies pascal?

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

Which statement correctly identifies amplitude?

A maximum displacement from mean position
B diverging spherical mirror
C heat transfer by bulk movement of a fluid
D buoyant force equals the weight of displaced fluid

Which statement correctly identifies transformer?

A acceleration due to gravity, about 9.8 m/s² near Earth
B tendency of an object to resist change in its state of motion
C energy transferred because of a temperature difference
D device changing AC voltage through electromagnetic induction

Which option best matches the scientific meaning of this term: Pascal la?

A heat absorbed or released during a phase change without temperature change
B separation of white light into component colours
C pressure applied to an enclosed fluid is transmitted throughout the fluid
D force opposing relative motion or its tendency between surfaces

Select the scientifically correct interpretation of kinetic energy?

A spontaneous emission from unstable nuclei
B energy due to motion
C machine converting electrical energy into mechanical energy
D unit of energy

The term is correctly defined as: frequency?

A measure related to average kinetic energy of particles
B energy associated with position or configuration
C number of oscillations per second
D increase in dimensions with temperature rise

Which statement is most accurate for hertz?

A SI unit of electric charge
B SI unit of frequency
C time for one complete oscillation
D large oscillation when driving frequency matches natural frequency

Identify the correct description of watt?

A change in momentum produced by a force acting over time
B production of emf by changing magnetic flux
C ideal oscillating bob suspended by a light string
D SI unit of power

Which option best matches the scientific meaning of this term: nuclear fusio?

A electromagnetic radiation strongly associated with thermal radiation
B SI unit of force
C semiconductor device that primarily permits current in one direction
D combining light nuclei with energy release

Select the scientifically correct interpretation of magnetic field?

A diverging lens
B sound above about 20 kHz
C increase in dimensions with temperature rise
D region where magnetic forces can act

The term is correctly defined as: pressure?

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

Which statement is most accurate for transformer?

A long-sightedness generally corrected with a convex lens
B change in direction of light when entering another medium
C device changing AC voltage through electromagnetic induction
D repetition of sound caused by reflection

Identify the correct description of convectio?

A heat transfer by bulk movement of a fluid
B opposition to electric current
C device converting light directly into electrical energy
D magnet produced by electric current

Which option best matches the scientific meaning of this term: newto?

A diverging lens
B increase in dimensions with temperature rise
C SI unit of force
D sound above about 20 kHz

Select the scientifically correct interpretation of ohm?

A separation of white light into component colours
B SI unit of electrical resistance
C mechanical wave requiring a material medium
D rate of flow of electric charge

The term is correctly defined as: impuls?

A electromagnetic radiation strongly associated with thermal radiation
B low-resistance path to ground for fault current
C light-emitting diode
D change in momentum produced by a force acting over time