The colour of a thin film is due to:   A) Scattering B) Dispersion C) Diffraction D) Interference

Q: ________ reveals that light is a transverse wave rather than a longitudinal wave like sound    a)…

A: We know the sound is a longitudinal wave and light is a transverse wave. By comparison, we will…

Q: Laser light is directed towards a pair of slits which are 2.50 x 10-2 mm apart. The light shines on…

A: Given: Given: Given the separation between the slits is 2.5×10-2 mm =2.5×10-5 m. The distance…

Q: A film on a lens with an index of refraction of 1.5 is 1.0 ×× 10−7−7 m thick and is illuminated with…

A:

Q: 18. A diffraction grating consists of 500 parallel slits per millimeter. The grating is illuminated…

A:

Q: The movement of light waves that come into contact with each other is called O A. Rectilinear…

A: C. Interference

Q: It is the bending of light as it passes through the edges of obstacles or barriers through small…

A: Diffraction is the bending of light as it passes through the edges of obstacles or barriers through…

Q: 1. For destructive interference, the path difference is: a) odd number of half wavelength b) even…

A:

Q: Optical fibre works on the: A. principle of refraction B. total internal reflection C. scattering D.…

A: Given:-             By using the optical fiber internal reflection is:

Q: Select TRUE statement(s) about light. A. Light is a transverse wave. B. Light cannot travel in…

A:

Q: The apparent position of the fish is different from the actual position of the fish. What has…

A: By analysing the given option and figure we will answer the given question.

Q: Plane waves are incident on a slit whose width is adjustable. The slit starts out on wavelength wide…

A: Dark fringes in the diffraction pattern of a single slit at an angle θ is given asλ is the…

Q: The phenomenon of several light waves interfering with one another under particular conditions,…

A:

Q: A phase change occurs whenever light reflects off of a medium with a lower refractive index than the…

A: When light reflect off of a medium with lower refractive index than the medium that the light is…

Q: Why light is said to have a dual nature? a. It exhibits the properties of wave and particles. b.…

A: Wave-particle duality:  According to this theory every particle and wave exhibits the dual nature,…

Q: Which of these waves will diffract the most when passing through a 20 cm wide opening in a barrier?…

A: It is known that the most important condition for diffraction to happen is : The wavelength of the…

Q: Red, green and blue light are incident on a thin film. The light that reflects from the surface…

A: Answer Thin film interference occurs when light wave reflecting off the top and bottom surfaces of a…

Q: 5. A diffraction grating of 1000 lines/cm has red light of wavelength 700 nm pass through it. The…

A: Solution: Given: 1 m = 100 cm N = line density on diffraction grating = 1000 lines/cm = 100000…

Q: The path length difference between two interfering waves in a double-slitexperiment is 3/2. The…

A:

Q: Which of the following statements is true about Huygens’s principle of secondary wavelets?  a. It…

A: Huygens’s principle

Q: Two light sources emit waves that are in phase with a wavelength of λ = 350 nm. The two waves meet…

A: For destructive interference phase difference is (2n+1)λ2. So, the phase difference come out to be…

Q: True or False: Sound waves are generally faster than light waves. O True O False

A: The speed of light in a vacuum is 3×108 m/s. The sound requires a medium to travel. The speed of…

Q: Which of the following is NOT a property of light that makes it a wave phenomenon? A diffraction в…

A: We have to write the properties of light that make a wave phenomenon

Q: The colors on a thin film such as an oil slick are caused by which TWO of the following optical…

A: Refraction is the bending of the light when light moves from one medium to another.  Diffraction is…

Q: The spectrum of color seen reflected off of a CD is caused by...   a. Dispersion   b.…

A: The spectrum of color reflected from a Compact Disk ( CD) is due to the optical phenomenon known as…

Q: For sound waves, the angle of refraction is always smaller than the angle of incidence. a. True b.…

A: Sound waves travels in the form of longitudinal waves as the direction of propagation of sound waves…

Q: Which describes the bending of light as it passes around or through a slit? O polarization O Doppler…

A: Polarization is the process in which vibrations of a light wave are restricted in a specific plane.

Q: The sky is blue because of   a. polarization.   b. scattering.   c. diffraction.   d.…

A: Scattering of light: It is the phenomenon under which the light rays get deviated from its straight…

Q: The movement of light waves that come into contact with each other is called A. Interference B.…

A: The movement of light waves that come into contact with each other is called A) interference. When…

Q: The separation between adjacent maxima in a double-slit interference pattern using monochromatic…

A:

Q: Which factor is NOT involved in the production of colored patterns exhibited when white light is…

A:

Q: A film material with n = coating is 380nm thick. White light is incident perpendicularly to the…

A: Given data: Refractive index of flat glass = 1.55 Refractive index of a film material = 1.25 Film…

Q: A few light waves of different wavelengths are propagating in air. With the provided information,…

A: Given: speed of sound in air = 343m/s wavelengths are propagating in air, (a) λ=100 nm   (b) λ=40…

Q: A light wave is best described as: a. A longitudinal wave b. A transverse wave c. Both a…

A: In Transverse wave the particle oscillates perpendicular to the direction of motion of wave. In…

Q: In classic mechanics, wave motion shows which of the following properties that particel motion does…

A: Interference was used to conferm the wave nature of the light as if light doesn't have wave nature…

Q: Light passing through a double slit light waves 20. Due to at location A a il occurs because the…

A: The diagram shows Young's Double Slit Experiment.  At location A, constructive interference occurs.…

Q: Choose the most appropriate answer:Sir CV Raman was awarded Noble Prize for his work connected with…

A: Sir CV Raman was awarded Nobel Prize in the year 1930 for his work connected with scattering.

Q: f both light and sound is away. 340 m. 510 m. 680 m. 850 m.

A: Given: Speed of sound = V= 340 m/s  Time = t=  3 sec

Q: If we make an object shadow on the wall, it will appear some shadows. The picture shows the wave…

A: Light from the edge of material is subjected to diffraction

Q: Aside from reflection, which wave behavior is responsible for the brilliant colors of thin films of…

A: the correct option is (b) interference

Q: A plane wave of monochromatic light is incident normally on a uniform thin film of oil that covers a…

A: The condition for the destructive interference is given by,

Q: What is the index of refraction of a material in which the red-light wavelength is 495 nm?…

A: Given : λ = 495 nm λo = 692 nm

Q: What is the phenomenon which established the transverse nature of light ?   A) Reflection B)…

A: Given that, The phenomenon of the transverse nature of light.

Q: Red, green and blue light are incident on a thin film. The light that reflects from the surface…

A: When light waves are incident on a thin film then it gets reflected by its upper interface and lower…

Q: For destructive interference, the path difference is an odd number of half-wavelengths even number…

A: When two light waves from different coherent sources meet together, then the distribution of energy…

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.