General Science

What is the best description of fuse?

A large oscillation when driving frequency matches natural frequency
B SI unit of electric charge
C safety device that melts when excessive current flows
D ideal oscillating bob suspended by a light string

In general science, watt refers to:

A heat transfer through matter without bulk movement
B converging spherical mirror
C mass per unit volume
D SI unit of power

Which statement correctly identifies centre of gravity?

A motion under gravity alone, neglecting other forces
B SI unit of electrical resistance
C SI unit of power
D point through which resultant gravitational force may be considered to act

In general science, heat refers to:

A distance between corresponding points of successive waves
B heat transfer by electromagnetic waves
C converging lens
D energy transferred because of a temperature difference

Which statement correctly identifies resonance?

A sum of kinetic and potential energy
B large oscillation when driving frequency matches natural frequency
C net force equals rate of change of momentum; for constant mass F = ma
D SI unit of electrical resistance

What is the best description of concave lens?

A SI unit of electric current
B diverging lens
C apparent frequency change due to relative motion
D time for one complete oscillation

In general science, sound refers to:

A pressure applied to an enclosed fluid is transmitted throughout the fluid
B converging lens
C mechanical wave requiring a material medium
D heat transfer by electromagnetic waves

In general science, X-rays refers to:

A region where magnetic forces can act
B about 343 m/s in air near room temperature
C SI unit of pressure
D high-energy electromagnetic radiation used in medical imaging

What is the best description of specific heat capacity?

A mass multiplied by velocity
B force opposing relative motion or its tendency between surfaces
C heat needed to raise unit mass by one degree
D heat absorbed or released during a phase change without temperature change

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

A electrostatic force varies with charges and inverse square of distance in vacuum
B energy associated with position or configuration
C force multiplied by displacement in the direction of force
D time for one complete oscillation

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