WorksheetsPhysics Revision Questions
Total questions: 69
Worksheet time: 2hrs 0mins
The time taken for one complete oscillation is known as:
Frequency
Wavelength
Period
Amplitude
The speed of a wave is the product of:
Frequency and period
Frequency and wavelength
Wavelength and amplitude
Amplitude and period
A longitudinal wave is one in which the particles of the medium:
Move perpendicular to the wave
Move in circular paths
Move parallel to the direction of wave travel
Don't move at all
Sound cannot travel through:
Solids
Liquids
Gases
Vacuum
The pitch of a sound depends on:
Amplitude
Frequency
Speed
Echo
In resonance, maximum energy transfer occurs when:
The driving frequency is zero
The driving frequency equals the natural frequency
Amplitude is minimized
Damping is highest
Which of the following is true about electromagnetic waves?
They require a medium
They are longitudinal
They travel slower in a vacuum
They can travel through vacuum
Which factor affects the loudness of a sound?
Frequency
Wavelength
Amplitude
Phase
Illumination of a surface decreases as:
Distance from source increases
Intensity increases
Wavelength decreases
None of the above
Which phenomenon demonstrates the wave nature of light?
Reflection
Refraction
Interference
Absorption
State the two laws of reflection of light.
Define refractive index. What does it indicate about a medium?
Explain why a convex mirror is suitable for security and rear-view applications.
What is meant by the term 'critical angle'? When does total internal reflection occur?
Briefly explain why light diffracts more when it passes through a narrow slit.
How does interference help us understand the wave nature of light?
Why does the image in a concave mirror become inverted when the object is placed beyond the focus?
Describe one practical use of diffraction in technology or nature.
Explain the formation of interference fringes in Young's double slit experiment. What factors affect fringe width?
Discuss the impact of diffraction on optical resolution. How does this influence telescope and microscope design?
Explain how optical fibers use the principle of total internal reflection. Include a labeled diagram.
A ray strikes a plane mirror with an angle of incidence of 35°. Find the angle between the incident and reflected rays.
A light ray enters water (n = 1.33) from air (n = 1.00) at an angle of 45°. Find the angle of refraction.
A concave mirror has a focal length of 20 cm. An object is placed 60 cm in front of the mirror. Find the image distance and describe the nature of the image.
Calculate the critical angle for a glass-air interface if the refractive index of glass is 1.5.
In Young's double slit setup, the slit separation is 0.25 mm (about 0.01 in) and the screen is 1.5 m away. Light of wavelength 500 nm is used. Calculate the fringe spacing.
A slit of width 0.05 mm produces a diffraction pattern on a screen 2 m away using light of 600 nm. Find the angular width of the central maximum.
Which of the following particles has a negative charge?
Proton
Neutron
Electron
Alpha particle
The law of conservation of charge in a circuit implies that charge isn't created or destroyed, remains constant, and electrons can move to maintain continuity in a circuit.
True
False
The unit of electric charge is:
Coulomb
Newton
Joule
Ohm
Which law explains the force between two electric charges?
Ohm's Law
Coulomb's Law
Faraday's Law
Newton's Third Law
Electric field lines always point:
From negative to positive
From positive to negative
In circles
Randomly
The strength of an electric field is measured in:
N/C
V/A
Ohms
J/C
What happens to the electric field if the charge increases?
It disappears
It becomes stronger
It reverses direction
It stays the same
A common application of electric fields is in:
Measuring mass
Photocopiers
Thermometers
Barometers
An object that is magnetic has a north-seeking pole and a south-seeking pole.
True
False
An electric generator converts ________________.
thermal energy to electrical energy
electrical energy to thermal energy
solar energy to electrical energy
chemical energy to electrical energy
The unit of electric current is:
Ampere
Volt
Watt
Coulomb
In a closed circuit, current flows from:
Positive to negative terminal
Earth to battery
Negative to positive terminal
Switch to bulb
Electrical energy is transformed into light in a:
Heater
Battery
Bulb
Wire
The photo-electric effect helps in the measurement of _______________?
Planck's constant
Voltmeter
Spring constant
Thermometer
The unit of electrical energy used by electric companies is:
Kilowatt-hour
Joule
Ampere
Volt
In a series circuit, if one bulb goes out, the others:
Also go out
Stay on
Get brighter
Flicker
In a parallel circuit, voltage across each branch is:
Zero
Divided
The same
Doubled
___________ is a device used to measure very small electric currents?
Voltmeter
Galvanometer
Thermometer
Resistor
If resistance increases in a circuit, the current will:
Increase
Decrease
Stay the same
Reverse
Ohm's Law is written as:
I = V + R
V = IR
P = IV
R = V + I
A student builds a circuit with two bulbs. When one bulb is removed, the other stays lit. What type of circuit is this?
Open circuit
Series circuit
Parallel circuit
Short circuit
If the incident light on a photocell is very dim, electrons will be ejected immediately if the frequency is at or above the threshold frequency.
True
False
A charged balloon sticks to a wall after being rubbed on hair. This is due to:
Magnetic attraction
Electrostatic force
Current flow
Gravitational pull
A student increases the resistance in a circuit while keeping the voltage constant. What happens to the current?
It increases
It stays the same
It decreases
It becomes zero
Which everyday device uses electric fields to remove dust particles from air?
Ceiling fan
Air purifier
Toaster
Thermostat
Define electric charge and state the two types of charges.
Explain what happens when a positively charged object is brought near a neutral object.
State Coulomb's law and describe how the electrostatic force changes with distance.
What does the direction of electric field lines indicate about the source charge?
Describe how a charged particle behaves when placed in a uniform electric field.
Give one real-life application of electric fields and explain how it works.
Differentiate between a conductor and an insulator with examples.
Label the following in the given diagram of the magnetic field.
Describe what happens to current in a series circuit if one component fails.
Explain the energy transformation that occurs in an electric heater.
A room contains a strong, uniform magnetic field. A loop of fine wire in the room has current in it. The loop is rotated until there is no torque on it as a result of the field. What is the direction of the magnetic field relative to the plane of the coil?
Suppose you are taking a walk and realize you are lost. You have a compass, but the red paint marking the north pole of the compass needle has worn off. You also have a length of wire and a flashlight with a battery. How could you identify the north pole of the compass?
A current is sent through a vertical spring, as shown. The end of the spring is in a cup filled with mercury. What will happen? Why?
Draw a small bar magnet with field lines around it. Use arrows to show the direction of the field. Draw a small nail in this magnetic field with the induced north and south poles indicated. The bar magnet's field exerts an attractive force on one pole of the nail and a repulsive force on the other. Why is the nail pulled toward the bar magnet?
The current is coming straight out of the page in the wire in the image. Copy the figure and sketch the magnetic field that the current generates.
Draw a closed-circuit diagram with an voltmeter across a resistor and an ammeter.
Draw a simple series circuit that includes the following components: A battery (cell), Three resistors labeled: 10 Ω, 25 Ω, and 5 Ω.
