General Science

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

The term is correctly defined as: myopia?

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

Which statement is most accurate for ampere?

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

Identify the correct description of semiconductor?

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

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

A electrostatic force varies with charges and inverse square of distance in vacuum
B an object remains at rest or in uniform straight-line motion unless acted on by a net external force
C rate of doing work
D buoyant force equals the weight of displaced fluid

Select the scientifically correct interpretation of temperatur?

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

The term is correctly defined as: infrasoun?

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

Which statement is most accurate for resonance?

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

Identify the correct description of solar cell?

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

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

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

Select the scientifically correct interpretation of Newton’s third law?

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

The term is correctly defined as: Newton’s third la?

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