General Science

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

Which statement is most accurate for simple pendulum?

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 ideal oscillating bob suspended by a light string
D point through which resultant gravitational force may be considered to act

Identify the correct description of specific heat capacity?

A heat needed to raise unit mass by one degree
B circuit with a single current path
C sound below about 20 Hz
D machine converting electrical energy into mechanical energy

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

A work done per unit charge
B low-resistance path to ground for fault current
C number of oscillations per second
D semiconductor device that primarily permits current in one direction

Select the scientifically correct interpretation of nuclear fission?

A converging spherical mirror
B splitting of a heavy nucleus with energy release
C work done per unit charge
D number of oscillations per second

The term is correctly defined as: hypermetropia?

A long-sightedness generally corrected with a convex lens
B SI unit of frequency
C every action has an equal and opposite reaction
D motion under gravity alone, neglecting other forces

Which statement is most accurate for X-rays?

A electromagnetic radiation strongly associated with thermal radiation
B semiconductor device that primarily permits current in one direction
C high-energy electromagnetic radiation used in medical imaging
D safety device that melts when excessive current flows

Identify the correct description of fuse?

A safety device that melts when excessive current flows
B every action has an equal and opposite reaction
C SI unit of frequency
D motion under gravity alone, neglecting other forces

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

A net force equals rate of change of momentum; for constant mass F = ma
B sum of kinetic and potential energy
C SI unit of electrical resistance
D magnet produced by electric current

Select the scientifically correct interpretation of reflection?

A maximum displacement from mean position
B opposition to electric current
C bouncing back of light from a surface
D magnet produced by electric current

The term is correctly defined as: speed of light?

A V = IR under constant physical conditions
B about 3 × 10^8 m/s in vacuum
C distance between corresponding points of successive waves
D device changing AC voltage through electromagnetic induction

Which statement is most accurate for conduction?

A converging lens
B heat transfer through matter without bulk movement
C buoyant force equals the weight of displaced fluid
D heat transfer by electromagnetic waves

Identify the correct description of electric curren?

A rate of flow of electric charge
B apparent frequency change due to relative motion
C machine converting mechanical energy into electrical energy
D combining light nuclei with energy release

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

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

Select the scientifically correct interpretation of resonance?

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