WorksheetsHow Light Act as a Wave and a Particle
Total questions: 20
Worksheet time: 33mins
Compare the angle of incidence from angle of reflection in a regular reflection.
The angle of incidence is equal to the angle of reflection.
The angle of incidence is less than the angle of reflection.
The angle of incidence is greater than the angle of reflection.
The angle of incidence is never equal to the angle of reflection.
Why does light bend (refracts) when it enters from air to water?
Light has a tendency to go in all direction.
It enters a material with different optical density.
Light changes its direction due to the resistivity of the material.
The bending of light is dependent upon the conductivity of the material.
How does the light bends as it enters from air to glass?
White light is separated into spectrum of colors by a prism. What does this mean?
White light has no color.
Prism emits different colors.
Prism absorbs the white light.
Component colors of light are refracted at different angles
Upon exiting a glass prism, white light is dispersed. Which color bends the most?
Red
Blue
Violet
Orange
How will the velocity of light change, as it enters a denser medium?
Light will slow down.
There will be an increase in its speed.
The speed of light will change in unknown value.
The light will change its direction and bend toward the normal.
If you were to fish by bow and arrow technique, where would you aim to actually strike a fish?
Strike exactly where you see the fish.
Aim below the fish; it is actually deeper than you think.
Shoot a little above its head; refraction causes a different perception of its depth.
In the morning, hit it above, but in the afternoon, aim it below because the light is dimmer.
How does the photoelectric effect demonstrate the particle characteristics of light?
Light bounces off like a wave, as it shines on the metal surface.
Light may knock the electrons out of the metal surface as if light were made of particles.
Intense radiation may (large-amplitude waves) may cause emitted electrons to have more energy.
The Energy of the electron emitted from metal surface is dependent on the speed of the light that shined on it.
What does the theories of modern physics tells us about light?
Demonstrate wave property only
Exclusively shows particle property
It combines wave and particle properties
It has neither wave nor particle properties
What color of light do photographers usually use in dark rooms? Why?
Yellow light since paper is not sensitive to this color.
Regular light may be used since it won’t affect the printing.
Red light does not cause the film to be exposed since it has low energy.
Violet light has the highest energy which is used to give color to the pictures.
Explain how you we see colors.
The color we see are the colors absorbed by the object.
The energy with wavelengths that are too short to see is "bluer than blue".
When light hits an object, the wavelengths change and are reflected in different direction.
When light hits an object, some wavelengths are absorbed by that object and the color we see are those that are reflected.
How come we cannot see other EM waves such as infrared, microwave and UV?
Other lights are invisible and has no color.
Our eyes are only sensitive and can only detect visible light spectrum.
Temperature of the surrounding interacts with these lights and makes it difficult for us to notice.
Ozone layer absorbs most of the energies of these lights thus making it colorless when it reaches the land.
Identify which property of light best explain the light phenomenon below.
Rainbow is separated into component colors upon passage through water droplets.
Scattering
Refraction
Diffraction
Dispersion
Identify which property of light best explain the light phenomenon below.
Mirage is formed by warm air near the road surface.
Scattering
Refraction
Diffraction
Dispersion
Identify which property of light best explain the light phenomenon below.
Sky appears blue in a clear cloudless day-time.
Scattering
Diffraction
Dispersion
Interference
Identify which property of light best explain the light phenomenon below.
Twinkling of the stars
Reflection
Refraction
Diffraction
Dispersion
Identify which property of light best explain the light phenomenon below.
Brilliant colors in soap bubbles
Reflection
Refraction
Diffraction
Interference
Choose which statement/s are true.
Ampere demonstrated that parallel wires carrying currents may attract and repel each other. Which wires will most likely attract?
I. Wires carrying current moving in the same direction.
II. Wires carrying current moving in opposite directions.
I only
II only
both I and II
neither I and II
Choose which statement/s are true.
When electrons are made to move through a conductor,
I. An electric current is produced
II. A magnetic field around the conductor develops
I only
II only
both I and II
neither I and II
Who demonstrated that the effect of a changing magnetic field on a conductor can induce electric current and vice versa?
Hertz
Faraday
Oersted
Maxwell
