Science - Physics (basic laws, forces, energy)
MCQS
A. Joule
B. Newton
C. Watt
D. Ohm
Newton is the unit of force.
A. Newton's First Law
B. Newton's Second Law
C. Newton's Third Law
D. Law of Universal Gravitation
Newton's First Law is also known as the Law of Inertia.
A. Kinetic Energy
B. Potential Energy
C. Thermal Energy
D. Mechanical Energy
Potential energy is stored energy based on position or condition.
A. It decreases
B. It increases
C. It remains constant
D. It transforms into mass
In a closed system, the total energy remains constant.
A. Tension
B. Friction
C. Gravity
D. Air Resistance
Friction acts opposite to the direction of motion or the tendency of motion.
A. 9.8 m/s²
B. 6.7 m/s²
C. 5.4 m/s²
D. 12.3 m/s²
The standard value for the acceleration due to gravity on Earth is approximately 9.8 m/s².
A. Coulomb's Law
B. Ohm's Law
C. Gauss's Law
D. Law of Conservation of Charge
The law of conservation of charge states that electric charge cannot be created or destroyed, only transferred.
A. Watt
B. Joule
C. Newton
D. Ampere
Power is measured in watts.
A. Tension
B. Friction
C. Magnetic Force
D. Normal Force
Magnetic force does not require physical contact between objects.
A. Object B exerts a force equal in magnitude and opposite in direction on object A.
B. Object B remains unaffected.
C. Object A exerts a force in the same direction on object B.
D. Object B exerts a force twice the magnitude on object A.
Newton's third law states that for every action, there is an equal and opposite reaction.
A. Ampere
B. Coulomb
C. Volt
D. Ohm
Coulomb is the unit of electric charge.
A. Speed
B. Distance
C. Acceleration
D. Mass
Acceleration has both magnitude and direction, making it a vector quantity.
A. Boyle's Law
B. Charles's Law
C. Avogadro's Law
D. Gay-Lussac's Law
Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.
A. Concave Lens
B. Convex Lens
C. Plano-concave Lens
D. Plano-convex Lens
Convex lenses converge light rays and are thicker in the center.
A. Air
B. Water
C. Solid
D. Vacuum
Sound travels fastest in solids due to the closer arrangement of particles.
A. Absorbing ultraviolet radiation
B. Generating oxygen
C. Facilitating photosynthesis
D. Regulating temperature
The ozone layer absorbs most of the sun's harmful ultraviolet (UV) radiation.
A. Relationship between current and voltage
B. Relationship between power and resistance
C. Relationship between charge and time
D. Relationship between force and mass
Ohm's Law states that the current through a conductor is directly proportional to the voltage across it.
A. Gravitational Force
B. Electromagnetic Force
C. Strong Nuclear Force
D. Weak Nuclear Force
Gravitational force acts between all objects with mass.
A. The angle of incidence is equal to the angle of refraction
B. The angle of incidence is equal to the angle of reflection
C. Light travels in straight lines
D. Light bends towards the normal
According to the law of reflection, the angle of incidence equals the angle of reflection.
A. Wheelbarrow
B. Tweezers
C. Nutcracker
D. Seesaw
In a first-class lever, the fulcrum is located between the effort force and the resistance force.
A. 9.8 m/s²
B. 6.7 m/s²
C. 5.4 m/s²
D. 12.3 m/s²
The standard value for the acceleration due to gravity on Earth is approximately 9.8 m/s².
A. Coulomb's Law
B. Ohm's Law
C. Gauss's Law
D. Law of Conservation of Charge
The law of conservation of charge states that electric charge cannot be created or destroyed, only transferred.
A. Watt
B. Joule
C. Newton
D. Ampere
Power is measured in watts.
A. Tension
B. Friction
C. Magnetic Force
D. Normal Force
Magnetic force does not require physical contact between objects.
A. Object B exerts a force equal in magnitude and opposite in direction on object A.
B. Object B remains unaffected.
C. Object A exerts a force in the same direction on object B.
D. Object B exerts a force twice the magnitude on object A.
Newton's third law states that for every action, there is an equal and opposite reaction.
A. Weber
B. Tesla
C. Henry
D. Gauss
Weber is the unit of magnetic flux.
A. It decreases
B. It increases
C. It remains constant
D. It becomes zero
In the absence of external forces, the total momentum of a system is conserved.
A. Red
B. Green
C. Blue
D. Yellow
Blue light is refracted more than red light due to its shorter wavelength.
A. Digestion
B. Respiration
C. Filtration of blood
D. Circulation
The kidneys filter waste products from the blood and regulate fluid balance.
A. Zeroth Law
B. First Law
C. Second Law
D. Third Law
The First Law of Thermodynamics is also known as the Law of Conservation of Energy.
A. W = F × d
B. W = P × V
C. W = m × a
D. W = Q / t
Work done is calculated as the product of force and displacement.
A. The angle of reflection
B. The angle of incidence
C. The minimum angle for total internal reflection
D. The maximum angle for refraction
The critical angle is the minimum angle for total internal reflection to occur.
A. Newton's First Law
B. Newton's Second Law
C. Newton's Third Law
D. Law of Inertia
Newton's Second Law relates force, mass, and acceleration.
A. Volt
B. Ampere
C. Ohm
D. Watt
The volt is the unit of electric potential difference.
A. Proton
B. Neutron
C. Electron
D. Positron
Electrons carry a negative charge in an atom.
A. f = λ²
B. f = λ/2
C. f = 2λ
D. f = c/λ
This equation represents the relationship between frequency, wavelength, and the speed of light (c).
A. Zeroth Law
B. First Law
C. Second Law
D. Third Law
The Second Law of Thermodynamics describes the direction of heat flow.
A. Alternating Current
B. Amperes Current
C. Alternating Charge
D. Ampere Constant
AC refers to the flow of electric charge that periodically reverses direction.
A. Tension
B. Friction
C. Buoyancy
D. Drag
Drag force acts opposite to the motion of an object through a fluid.
A. Newton's First Law
B. Newton's Second Law
C. Newton's Third Law
D. Law of Inertia
Newton's Third Law states that for every action, there is an equal and opposite reaction.
A. Diffraction
B. Refraction
C. Reflection
D. Interference
Refraction is the bending of a wave as it enters a medium with a different speed.
A. Mass
B. Weight
C. Density
D. Volume
Mass is the measure of the amount of matter in an object.
A. Kinetic Energy
B. Potential Energy
C. Mechanical Energy
D. Thermal Energy
Kinetic energy is the energy of motion.
A. Newton's First Law
B. Newton's Second Law
C. Newton's Third Law
D. Law of Universal Gravitation
Newton's Third Law describes the action-reaction pairs in force interactions.
A. Dynamic Current
B. Direct Current
C. Differential Charge
D. Dual Circuit
DC refers to the flow of electric charge in one direction.
A. Ohm
B. Ampere
C. Volt
D. Watt
Ohm is the unit of electrical resistance.
A. Zeroth Law
B. First Law
C. Second Law
D. Third Law
The Third Law of Thermodynamics pertains to absolute zero and entropy.
A. Dispersion of light
B. Refraction of light
C. Diffraction of light
D. Reflection of light
A magnifying glass uses refraction to converge light rays and produce a magnified image.
A. Proton
B. Electron
C. Neutron
D. Positron
Electrons carry electric current in metal conductors.
A. Newton's First Law
B. Newton's Second Law
C. Newton's Third Law
D. Law of Universal Gravitation
Newton's Second Law relates mass, force, and acceleration.
A. Center of Mass
B. Center of Gravity
C. Center of Rotation
D. Center of Inertia
The center of gravity is the point where the entire mass can be concentrated.
A. Kinetic Energy
B. Potential Energy
C. Mechanical Energy
D. Thermal Energy
Potential energy is associated with an object's position in a force field, such as gravity.
A. Pressure
B. Force
C. Energy
D. Temperature
The pascal is the SI unit of pressure.
A. Focal Point
B. Nodal Point
C. Optical Center
D. Antifocal Point
The focal point is where parallel light rays converge or appear to diverge.
A. Newton's First Law
B. Newton's Second Law
C. Newton's Third Law
D. Law of Inertia
Newton's First Law is also known as the Law of Inertia.
A. Melting
B. Freezing
C. Sublimation
D. Condensation
Sublimation is the phase transition from solid to gas without passing through the liquid phase.
A. Zeroth Law
B. First Law
C. Second Law
D. Third Law
The First Law of Thermodynamics relates heat, work, and internal energy.
A. Resonance
B. Reflection
C. Diffraction
D. Refraction
Resonance occurs when a system is driven at its natural frequency, resulting in increased amplitude.
A. Gravity
B. Friction
C. Tension
D. Normal Force
Friction is a non-conservative force that opposes motion and dissipates energy.
A. Joule
B. Watt
C. Newton
D. Volt
The joule is the SI unit of both work and energy.