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WorksheetsPhysics Multiple Choice Questions 2
Total questions: 49
Worksheet time: 25mins
Which of the following quantities is a vector?
Speed
Distance
Work
Acceleration
A body moves with a constant velocity when
the resultant force is zero
acceleration is increasing
friction is large
force is increasing
Which of the following is NOT a fundamental quantity?
Length
Mass
Temperature
Area
The turning effect of a force is called
Work
Power
Moment
Impulse
The acceleration due to gravity on the moon is approximately
9.8 m/s²
5.5 m/s²
1.6 m/s²
20 m/s²
A simple pendulum has a period of 2 s. What is its frequency?
0.5 Hz
1 Hz
2 Hz
4 Hz
The area under a velocity-time graph represents
Acceleration
Displacement
Speed
Force
A machine has a mechanical advantage greater than 1 if
it moves fast
the effort is greater than the load
it multiplies force
efficiency is 100%
The efficiency of a machine is always less than 100% due to
increase in velocity
work done against friction
increase in power
decrease in speed
The point where the weight of an object acts is called
center of mass
center of gravity
equilibrium point
inertia point
A man pushes a wall with a force of 50 N but does no work because
there is friction
the force is not enough
the wall does not move
work is independent of force
The force of attraction between two masses is called
Friction
Centrifugal force
Gravitational force
Electromagnetic force
A liquid rises in a capillary tube due to
Adhesion
Surface tension
Viscosity
Density
If an object is in equilibrium, the sum of clockwise moments equals
zero
weight of the object
sum of anti-clockwise moments
force applied
Heat transfer through a vacuum occurs by
Conduction
Convection
Radiation
Conduction and Convection
A sound wave is a
transverse wave
electromagnetic wave
longitudinal wave
stationary wave
The speed of sound is fastest in
Air
Water
Vacuum
Steel
An image formed by a plane mirror is
Real and inverted
Virtual and upright
Diminished
Magnified
A transformer works based on the principle of
Static electricity
Magnetic induction
Chemical reaction
Conduction
A diode allows current to flow in
one direction only
both directions
opposite direction to voltage
high resistance condition
The speed of light in vacuum is approximately
3 × 10⁶ m/s
3 × 10⁸ m/s
3 × 10¹² m/s
3 × 10¹⁵ m/s
What is the main function of a fuse in an electrical circuit?
To increase resistance
To store charge
To prevent overloading
To generate power
The energy stored in a stretched spring is
Kinetic energy
Potential energy
Electrical energy
Thermal energy
A loud sound is produced by a wave with
Low amplitude
High amplitude
Short wavelength
Low frequency
The primary function of a transformer is to
Convert AC to DC
Convert mechanical energy to electrical energy
Step up or step down voltage
Generate heat
The force per unit charge at a point in an electric field is called
Electric potential
Electric current
Electric force
Electric field strength
The nuclear reaction that takes place in the sun is called
Fission
Fusion
Radiation
Ionization
The force that keeps planets in orbit around the sun is
Magnetic force
Gravitational force
Electrostatic force
Frictional force
The property of a material that enables it to return to its original shape after deformation is called
Plasticity
Elasticity
Hardness
Ductility
The acceleration of a freely falling object near the Earth's surface is approximately
1.6 m/s²
5.5 m/s²
9.8 m/s²
20 m/s²
A photon has a frequency of 6 × 10¹⁴ Hz. Using Planck's constant (6.63 × 10⁻³⁴ J·s), what is the energy of the photon?
2.0 × 10⁻¹⁹ J
3.978 × 10⁻¹⁹ J
5.2 × 10⁻¹⁹ J
6.63 × 10⁻¹⁸ J
The SI unit of momentum is
kg m²/s
N/m²
kg m/s
J/s
A body moving in a circular path experiences
Centripetal force
Centrifugal force
Gravitational force
Frictional force
The principle of flotation states that an object floats when
its weight is greater than upthrust
its density is greater than water
its weight is equal to upthrust
it is hollow
The efficiency of a machine is given by
MA/VR × 100
Work output/Work input × 100
Work input/Work output × 100
VR/MA × 100
The total resistance in a parallel circuit is always
greater than the largest resistor
less than the smallest resistor
equal to the sum of all resistances
equal to the average of all resistances
A force of 20 N acts on a body of mass 5 kg. The acceleration of the body is
0.25 m/s²
4 m/s²
5 m/s²
10 m/s²
When light travels from air to glass, its speed
increases
decreases
remains the same
changes randomly
The escape velocity of an object depends on
Mass of the object only
Mass of the planet only
Mass of both the object and planet
None of the above
The apparent weight of a body in a fluid is given by
Actual weight + upthrust
Actual weight - upthrust
Mass × upthrust
Volume × upthrust
The pitch of a sound wave depends on
Amplitude
Frequency
Speed
Medium
A transformer is used to
Increase or decrease current
Step up or step down voltage
Convert AC to DC
Store electrical energy
The mass of an atom is concentrated in the
Electron cloud
Nucleus
Proton
Neutron
The function of a capacitor in a circuit is to
Convert AC to DC
Store electrical charge
Increase resistance
Generate magnetic fields
If a force of 50 N is applied on an object and moves it 10 m, the work done is
5 J
50 J
500 J
5000 J
The induced emf in a coil is proportional to the
Length of the coil
Resistance of the coil
Rate of change of magnetic flux
Magnetic permeability
The half-life of a radioactive substance is
Time taken for half of the atoms to decay
Time taken to completely decay
Time taken to lose all energy
Time taken to become stable
A 2.0 kg block of copper is heated from 25°C to 75°C. If the specific heat capacity of copper is 390 J/kg·K, how much heat energy is required?
19,500 J
25,000 J
39,000 J
50,000 J
A radioactive substance has a half-life of 10 hours. If the initial mass is 160 g, how much will remain after 30 hours?
40 g
20 g
10 g
5 g
