Explain the differences between the particle and wave theories of light as they pertain to diffraction and partial reflection-partial refraction.
Particle Theory of Light
The particle theory of light was the proposal made by Newton in 1704 in his treatise Opticks. This is the most basic light theory, in which light is thought to be made up of microscopic particles known as "corpuscles" and that's why this particle theory of light is also named as Corpuscular theory of light.
Stopping Potential
In an experiment conducted by Heinrich Hertz, an apparatus was made where the incident light was made to fall on the metallic plate, it was discovered that metals emit electrons. The surface electrons are bound to metals with a minimum amount of energy and some of the incident photos enter the surface, they undergo collision with the atoms of the metal, they get absorbed and emit energy to an election, making it photoelectron, where the collision between the photons and electrons ejects the electrons out of the metal and with a negatively charged electron, causes photocurrent and when this current passes it creates an electric field where there is a potential difference at the output due to the anode and cathode of the electrode of the apparatus. This study involves the theory of Quantum physics and electromagnetism involving electromagnetic radiation and electromagnetic wave theory.
Quantization of Charges
An electron is a negatively charged subatomic particle either attached to an an atom or sticks to the nucleus of the atom. Electrons exert the negative charge that tries to balance the positive charge of the nucleus.
Hi, these are some grade 12 physics homework questions(Unit: Wave Nature of Light) from the course SPH4UI (short answers and multiple choice). I was having a lot of trouble with these ones. I've tried to include marks with questions to imitate how much work needs to be done for the question. Your best effort will be very appreciated. Thank you.
Question 1 Explain the differences between the particle and wave theories of light as they pertain to diffraction and partial reflection-partial refraction.
Question 3
Upon observing an interference pattern produced onto a screen, how could you identify whether a single slit, double slit, or diffraction grating produced the pattern?
Question 7
Two point sources are vibrating in phase producing two-dimensional water wave interference. The second antinodal line on either side of the central maximum will occur at locations where the path difference of the arriving waves is:
Question 7 options:
A) 2λ
B) 3/4 λ
C) 1/2 λ
D) 1/4 λ
E) λ
Question 10
As a student is performing a double-slit experiment to determine the
Question 10 options:
A) decrease the slit separation
B) decrease the distance between the slits and the screen
C) move the light source closer to the slits
D) both (a) and (b)
E)(a), (b), and (c)
Question 11
The brightest and clearest diffraction patterns are seen when light is shone through:
Question 11 options:
A) a single slit
B) a double slit
C) a diffraction grating
D) a polarizing filter
E) a thin soap film
Question 13
Light travelling in one material enters another material in which it travels faster. The light wave will:
Question 13 options:
A) increase in frequency
B) increase in wavelength
C) decrease in frequency
D) decrease in wavelength
E)travel through the new material inverted
Question 15
A beam of light is polarized. This means that:
Question 15 options:
A) the light has passed through a calcite crystal which causes double refraction
B) the vibrations are confined to a single plane
C) the light is a longitudinal wave
D) the vibrations are occurring in all possible directions
E) the vibrations are occurring in all directions perpendicular to the direction of light propagation
Question 16
Thin films of soap sometimes display an array of colours. This display is the result of:
Question 16 options:
A) reflection, diffraction, and interference
B) reflection, refraction, and interference
C) reflection, refraction, and polarization
D) refraction, interference, and polarization
E) reflection, interference, and polarization
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