General Science

What is the best description of resistance?

A circuit with multiple branches
B material with conductivity between conductor and insulator
C sound below about 20 Hz
D opposition to electric current

What is the best description of pressure?

A high-energy electromagnetic radiation used in medical imaging
B SI unit of frequency
C SI unit of work and energy
D force per unit area

Which statement correctly identifies radiation?

A V = IR under constant physical conditions
B heat transfer by electromagnetic waves
C device changing AC voltage through electromagnetic induction
D distance between corresponding points of successive waves

Which statement correctly identifies coulomb?

A distance between corresponding points of successive waves
B heat transfer by electromagnetic waves
C converging lens
D SI unit of electric charge

Which statement correctly identifies electrical power?

A rate of electrical energy transfer
B time required for half a radioactive sample to decay
C SI unit of electrical resistance
D SI unit of power

Which statement correctly identifies volt?

A long-sightedness generally corrected with a convex lens
B repetition of sound caused by reflection
C SI unit of potential difference
D circuit with multiple branches

What is the best description of refraction?

A rate of flow of electric charge
B change in direction of light when entering another medium
C safety device that melts when excessive current flows
D semiconductor device that primarily permits current in one direction

Which of the following is most closely associated with friction?

A every action has an equal and opposite reaction
B force opposing relative motion or its tendency between surfaces
C energy associated with position or configuration
D energy transferred because of a temperature difference

What is the best description of amplitude?

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 maximum displacement from mean position

In general science, convex lens refers to:

A converging lens
B every action has an equal and opposite reaction
C motion under gravity alone, neglecting other forces
D energy associated with position or configuration

What is the best description of myopia?

A short-sightedness generally corrected with a concave lens
B region where magnetic forces can act
C SI unit of pressure
D about 343 m/s in air near room temperature

Which statement correctly identifies Coulomb law?

A change in direction of light when entering another medium
B heat needed to raise unit mass by one degree
C force opposing relative motion or its tendency between surfaces
D electrostatic force varies with charges and inverse square of distance in vacuum

Which of the following is most closely associated with time period?

A production of emf by changing magnetic flux
B force per unit area
C time for one complete oscillation
D change in momentum produced by a force acting over time

Which of the following is most closely associated with half-life?

A difference between actual and potential output in an economy
B about 3 × 10^8 m/s in vacuum
C tendency of an object to resist change in its state of motion
D time required for half a radioactive sample to decay

What is the best description of kinetic energy?

A low-resistance path to ground for fault current
B work done per unit charge
C light-emitting diode
D energy due to motion

Which statement correctly identifies specific heat capacity?

A pressure applied to an enclosed fluid is transmitted throughout the fluid
B increase in dimensions with temperature rise
C diverging lens
D heat needed to raise unit mass by one degree

Which of the following is most closely associated with momentum?

A high-energy electromagnetic radiation used in medical imaging
B semiconductor device that primarily permits current in one direction
C mass multiplied by velocity
D SI unit of work and energy

Which of the following is most closely associated with thermal expansion?

A about 343 m/s in air near room temperature
B electromagnetic radiation shorter in wavelength than visible violet
C increase in dimensions with temperature rise
D SI unit of pressure

Which of the following is most closely associated with infrasound?

A spontaneous emission from unstable nuclei
B sound below about 20 Hz
C unit of energy
D machine converting electrical energy into mechanical energy

In general science, speed of sound refers to:

A ideal oscillating bob suspended by a light string
B electromagnetic radiation shorter in wavelength than visible violet
C SI unit of pressure
D about 343 m/s in air near room temperature

What is the best description of centre of gravity?

A electromagnetic radiation shorter in wavelength than visible violet
B device converting light directly into electrical energy
C SI unit of pressure
D point through which resultant gravitational force may be considered to act

Which statement correctly identifies parallel circuit?

A SI unit of pressure
B region where magnetic forces can act
C about 343 m/s in air near room temperature
D circuit with multiple branches

Which of the following is most closely associated with frequency?

A number of oscillations per second
B circuit with multiple branches
C short-sightedness generally corrected with a concave lens
D repetition of sound caused by reflection

What is the best description of electric current?

A diverging spherical mirror
B V = IR under constant physical conditions
C maximum displacement from mean position
D rate of flow of electric charge

Which statement correctly identifies convection?

A short-sightedness generally corrected with a concave lens
B sound below about 20 Hz
C circuit with a single current path
D heat transfer by bulk movement of a fluid