Chapter 2: Mechanical Properties of fluids
Chapter 3: Kinetic Theory of gases and Radiation
Chapter 4: Thermodynamics
Chapter 5: Oscillations
Chapter 6: Superposition of Waves
Chapter 7: Wave Optics
Chapter 8: Electrostatics
Chapter 9: Current Electricity
Chapter 10: Magnetic Effect of Electric Current
Chapter 11: Magnetic materials
Chapter 12: Electromagnetic Induction
Chapter 13: AC Circuits
Chapter 14: Dual Nature Of Radiation And Matter
Chapter 15: Structure of Atoms and Nuclei
Chapter 16: Semiconductors Devices
Chapter 7: Wave Optics
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 7 Wave Optics MCQ’s
1 Mark Each
When light travels from an optically rarer medium to an optically denser medium, the speed decreases because of change in ______
Light of wavelength 5000 A.U. falls on a plane reflecting surface. The frequency of reflected light is ______
6 × 1014Hz
5 × 1014Hz
2 × 1014Hz
1.666 × 1014Hz
Light follows wave nature because ______
Light rays travel in a straight line
Light exhibits the phenomenon of reflection and refraction
Light exhibits the phenomenon of interference
Light causes the phenomenon of the photoelectric effect
Young’s double-slit experiment is carried out using green, red and blue light, one colour at a time. The fringe widths recorded are WG, WR, and WB respectively then ______
WG > WB > WR
WB > WG > WR
WR > WB > WG
WR > WG > WB
The path difference between two waves meeting at a point is (11/4)λ. The phase difference between the two waves is ______
Which of the following cannot produce two coherent sources?
The bending of a beam of light around corners of obstacle is called ______
In a single slit diffraction pattern, the first minima obtained with the red light of wavelength 6600 A.U. coincides with the first maxima f some other wavelength λ then is ______
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 7 Wave Optics Very Short Answer
1 Mark Each
What is the shape of the wavefront on Earth for Sunlight?
In Young’s double-slit experiment, if there is no initial phase difference between the light from the two slits, a point on the screen corresponds to the 5th minimum. What is the path difference?
Two coherent sources whose intensity ratio is 25:1 produce interference fringes. Calculate the ratio of amplitudes of light waves coming from them.
Why two light sources must be of equal intensity to obtain a well-defined interference pattern?
What is the relation between phase difference and Optical path in terms of speed of light in a vacuum?
What should be the slit width to obtain pronounced diffraction with a single slit illuminated by the light of wavelength λ?
What must be the ratio of the slit width to the wavelength for a single slit, to have the first diffraction minimum at 45˚?
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 7 Wave Optics Short Answer I
2 Marks Each
What are Secondary sources? State Huygens’ Principle.
A Plane Wavefront of light of wavelength 5500 A.U. is incident on two slits in a screen perpendicular to the direction of light rays. If the total separation of 10 bright fringes on a screen 2 m away is 2 cm. Find the distance between the slits.
State any four Conditions for Obtaining well–defined and Steady Interference Patterns.
Draw a neat labelled ray diagram of the Fresnel Biprism experiment showing the region of interference.
Answer in brief:
Explain what is the optical path length. How is it different from actual path length?
What is the difference between Fresnel and Fraunhofer diffraction?
Compare Young’s Double Slit Interference Pattern and Single Slit Diffraction Pattern.
White light consists of wavelengths from 400 nm to 700 nm. What will be the wavelength range seen when white light is passed through a glass of refractive index 1.55?
The optical path of a ray of light of a given wavelength travelling a distance of 3 cm in flint glass having refractive index 1.6 is the same as that on travelling a distance x cm through a medium having a refractive index 1.25. Determine the value of x.
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 7 Wave Optics Short Answer II
3 Marks Each
Explain the reflection of light at a plane surface with the help of a neat ray diagram.
Describe Young’s double-slit experiment with a neat diagram showing points of maximum and minimum intensity.
Explain experimental setup for Fraunhofer diffraction with neat diagram.
Answer in brief:
The distance between two consecutive bright fringes in a biprism experiment using the light of wavelength 6000 Å is 0.32 mm by how much will the distance change if light of wavelength 4800 Å is used?
A parallel beam of green light of wavelength 546 nm passes through a slit of width 0.4 mm. The intensity pattern of the transmitted light is seen on a screen that is 40 cm away. What is the distance between the two first-order minima?
In Fraunhoffer diffraction by a narrow slit, a screen is placed at a distance of 2 m from the lens to obtain the diffraction pattern. If the slit width is 0.2 mm and the first minimum is 5 mm on either side of the central maximum, find the wavelength of light.
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 7 Wave Optics Long Answer
4 Marks Each
Describe geometry of the Young’s double slit experiment with the help of a ray diagram. What is fringe width? Obtain an expression of it. Write the conditions for constructive as well as destructive interference.
Explain Fraunhofer diffraction at a single slit with a neat ray diagram. Obtain an expression for the width of the central bright fringe.
What is interference?
Explain constructive and destructive interference with the help of a diagram?
What are coherent sources of light?
Chapter 7: Wave Optics
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 chapter 7 - Wave Optics
SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 chapter 7 (Wave Optics) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board 12th Standard HSC Physics Maharashtra State Board 2021 solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in 12th Standard HSC Physics Maharashtra State Board 2021 chapter 7 Wave Optics are Introduction of Wave Optics, Nature of Light, Light as a Wave, Huygens’ Theory, Reflection of Light at a Plane Surface, Refraction of Light at a Plane Boundary Between Two Media, Polarization, Interference, Diffraction of Light, Resolving Power.
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