Podcast
Questions and Answers
Which type of waves are light waves?
Which type of waves are light waves?
- Longitudinal waves
- Both (a) and (b)
- Transverse waves (correct)
- None of them
Which phenomenon does not support the wave nature of light?
Which phenomenon does not support the wave nature of light?
- Compton effect (correct)
- Diffraction
- Interference
- Polarization
What characterizes two coherent sources of light?
What characterizes two coherent sources of light?
- Same wavelength
- Same frequency
- Constant phase difference between them (correct)
- All of the above
What causes colors in thin films?
What causes colors in thin films?
What is the change in phase of a light wave reflected at the angle air-glass interface?
What is the change in phase of a light wave reflected at the angle air-glass interface?
What is the relationship between the intensity of a light wave and its amplitude?
What is the relationship between the intensity of a light wave and its amplitude?
In the context of diffraction, what defines the behavior of light around an obstacle?
In the context of diffraction, what defines the behavior of light around an obstacle?
For prominent diffraction to occur, what should be the size of the diffracting object relative to the wavelength of light used?
For prominent diffraction to occur, what should be the size of the diffracting object relative to the wavelength of light used?
What type of wave front should be present in Fraunhofer diffraction?
What type of wave front should be present in Fraunhofer diffraction?
What determines the maximum number of orders found with a diffraction grating?
What determines the maximum number of orders found with a diffraction grating?
How does the resolving power of a grating change with the number of ruled lines per cm?
How does the resolving power of a grating change with the number of ruled lines per cm?
What formula represents the resolving power of a grating?
What formula represents the resolving power of a grating?
Which phenomenon indicates the transverse nature of light waves?
Which phenomenon indicates the transverse nature of light waves?
'Plane-polarised light' has vibrations in what relation to the direction of propagation?
'Plane-polarised light' has vibrations in what relation to the direction of propagation?
What crystal is a Nicol prism made from?
What crystal is a Nicol prism made from?
Flashcards
Light Wave Nature
Light Wave Nature
Light behaves like a wave, evidenced by interference, diffraction, and polarization.
Coherent Sources
Coherent Sources
Sources emitting waves with a constant phase difference.
Thin Film Interference
Thin Film Interference
Colors in thin films result from interference of reflected light.
Reflection Phase Shift
Reflection Phase Shift
Signup and view all the flashcards
Newton's Rings
Newton's Rings
Signup and view all the flashcards
Intensity and Amplitude
Intensity and Amplitude
Signup and view all the flashcards
Diffraction
Diffraction
Signup and view all the flashcards
Fraunhofer Diffraction
Fraunhofer Diffraction
Signup and view all the flashcards
Diffraction Grating
Diffraction Grating
Signup and view all the flashcards
Polarization
Polarization
Signup and view all the flashcards
Plane-Polarized Light
Plane-Polarized Light
Signup and view all the flashcards
de Broglie Wavelength
de Broglie Wavelength
Signup and view all the flashcards
Matter Waves
Matter Waves
Signup and view all the flashcards
Wave Function
Wave Function
Signup and view all the flashcards
Periodic Potential
Periodic Potential
Signup and view all the flashcards
Study Notes
Light Waves
- Light waves are transverse waves.
- The wave nature of light is supported by interference, diffraction, and polarization.
- Compton effect does not support the wave nature of light.
Coherence
- Two sources are said to be coherent if their emitted waves have a constant phase difference between them.
Thin Films
- Colors in thin films are due to interference.
Reflection
- When light waves are reflected at the angle air-glass interface, the change in phase of the reflected wave is equal to π.
- A phase difference of π is equivalent to a path difference of λ.
Newton's Rings Experiment
- The central fringe of Newton's rings experiment is dark.
- The diameter of the dark rings is proportional to the square root of natural numbers.
Intensity of Light
- Intensity of light is proportional to the square of the amplitude.
Diffraction
- Diffraction is the bending of light around an obstacle.
- To find prominent diffraction, the size of the diffracting object should be of the order of the wavelength of light used.
- In Fraunhofer diffraction, the incident wave front should be plane.
Diffraction Grating
- The maximum number of orders found with a diffraction grating is directly proportional to the grating element.
- The resolving power of the grating increases as the number of ruled lines per cm of a grating increases.
- The resolving power of the grating is λ/dλ.
Polarization
- Polarization tells about the transverse nature of light waves.
- Plane-polarized light has vibrations perpendicular to the direction of propagation.
- In a Nicol prism, the O-ray and E-rays travel along the optic axis, and the O-ray travels faster than the E-ray.
de Broglie Wavelength
- The de Broglie wavelength associated with a particle of mass m moving with velocity v is given by λ=h/mv.
- The de Broglie wavelength is given by λ= h/√2𝑚𝐸 if E is the kinetic energy of the material particle of mass m.
Matter Waves
- The concept of matter waves was first introduced by de Broglie.
- The probability density of the particle is represented by |𝛹|2.
Wave Function
- The normalized condition of the wave function Ψ is ∫ 𝛹 𝛹 ∗ dV = 1.
Periodic Potential
- When the particle is inside the periodic potential 1-D box, its potential energy is equal to zero.
- Planck's radiation law explains for longer wavelengths.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on light waves, optics, and phenomena related to the wave nature of light. Questions include the types of light waves, coherence of sources, and the reasons behind colors in thin films.
