General Science

Which statement correctly identifies output gap?

A motion under gravity alone, neglecting other forces
B difference between actual and potential output in an economy
C acceleration due to gravity, about 9.8 m/s² near Earth
D tendency of an object to resist change in its state of motion

In general science, motor refers to:

A machine converting electrical energy into mechanical energy
B bouncing back of light from a surface
C sound below about 20 Hz
D short-sightedness generally corrected with a concave lens

Which statement correctly identifies kilowatt-hour?

A mass multiplied by velocity
B region where magnetic forces can act
C force opposing relative motion or its tendency between surfaces
D unit of energy

Which statement correctly identifies solar cell?

A device converting light directly into electrical energy
B mechanical wave requiring a material medium
C safety device that melts when excessive current flows
D rate of flow of electric charge

In general science, Archimedes principle refers to:

A buoyant force equals the weight of displaced fluid
B force multiplied by displacement in the direction of force
C heat transfer by bulk movement of a fluid
D mass per unit volume

Which statement correctly identifies generator?

A energy due to motion
B machine converting mechanical energy into electrical energy
C pressure applied to an enclosed fluid is transmitted throughout the fluid
D heat transfer by electromagnetic waves

Which of the following is most closely associated with heat?

A mechanical wave requiring a material medium
B rate of flow of electric charge
C energy transferred because of a temperature difference
D safety device that melts when excessive current flows

Which of the following is most closely associated with electromagnet?

A number of oscillations per second
B magnet produced by electric current
C heat transfer through matter without bulk movement
D converging spherical mirror

In general science, myopia refers to:

A heat absorbed or released during a phase change without temperature change
B force per unit area
C short-sightedness generally corrected with a concave lens
D change in momentum produced by a force acting over time

What is the best description of friction?

A device converting light directly into electrical energy
B force opposing relative motion or its tendency between surfaces
C electromagnetic radiation shorter in wavelength than visible violet
D SI unit of pressure

Which of the following is most closely associated with Pascal law?

A diverging lens
B increase in dimensions with temperature rise
C sound above about 20 kHz
D pressure applied to an enclosed fluid is transmitted throughout the fluid

What is the best description of radiation?

A long-sightedness generally corrected with a convex lens
B heat transfer by electromagnetic waves
C change in direction of light when entering another medium
D repetition of sound caused by reflection

Which statement correctly identifies concave lens?

A about 3 × 10^8 m/s in vacuum
B tendency of an object to resist change in its state of motion
C diverging lens
D difference between actual and potential output in an economy

Which of the following is most closely associated with watt?

A short-sightedness generally corrected with a concave lens
B SI unit of power
C bouncing back of light from a surface
D sound below about 20 Hz

In general science, density refers to:

A energy due to motion
B net force equals rate of change of momentum; for constant mass F = ma
C measure related to average kinetic energy of particles
D mass per unit volume

Which statement correctly identifies Archimedes principle?

A every action has an equal and opposite reaction
B buoyant force equals the weight of displaced fluid
C motion under gravity alone, neglecting other forces
D energy associated with position or configuration

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

A net force equals rate of change of momentum; for constant mass F = ma
B SI unit of electrical resistance
C sum of kinetic and potential energy
D energy due to motion

Which statement correctly identifies motor?

A heat transfer through matter without bulk movement
B mass per unit volume
C converging spherical mirror
D machine converting electrical energy into mechanical energy

Which statement correctly identifies refraction?

A apparent frequency change due to relative motion
B machine converting mechanical energy into electrical energy
C combining light nuclei with energy release
D change in direction of light when entering another medium

Which of the following is most closely associated with Newton’s second law?

A material with conductivity between conductor and insulator
B repetition of sound caused by reflection
C net force equals rate of change of momentum; for constant mass F = ma
D circuit with multiple branches

Which statement correctly identifies momentum?

A mass multiplied by velocity
B long-sightedness generally corrected with a convex lens
C circuit with multiple branches
D repetition of sound caused by reflection

In general science, work refers to:

A time required for half a radioactive sample to decay
B force multiplied by displacement in the direction of force
C material with conductivity between conductor and insulator
D SI unit of power

What is the best description of speed of sound?

A light-emitting diode
B about 343 m/s in air near room temperature
C work done per unit charge
D low-resistance path to ground for fault current

Which statement correctly identifies dispersion?

A device converting light directly into electrical energy
B electromagnetic radiation shorter in wavelength than visible violet
C separation of white light into component colours
D SI unit of pressure

Which statement correctly identifies radioactivity?

A electromagnetic radiation shorter in wavelength than visible violet
B light-emitting diode
C spontaneous emission from unstable nuclei
D low-resistance path to ground for fault current