Here we will provide you the 50+ MCQ Questions of Wave Optics for NEET-UG. Wave Optics is the chapter 7 in Class XII or Class 12 Physics NCERT Unit Alternating Current NEET (conducted by NTA) is based on the NCERT book.
These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Wave Optics NEET MCQ Questions with Answers.
Wave Optics NEET MCQ
The speed of light in a medium is 2 × 10^8 m/s. The refractive index of the medium is:
a) 1.33
b) 1.5
c) 1.67
d) 2.0
In Young’s double-slit experiment, if the separation between the slits is increased, the fringe width will:
a) Increase
b) Decrease
c) Remain the same
d) Become zero
In a double-slit experiment, the distance between the slits is d and the distance between the slits and the screen is D. If the wavelength of the light used is λ, the distance between two consecutive bright fringes is:
a) λD/d
b) λd/D
c) D/d
d) λ/2D
In Young’s double-slit experiment, if a thin film of thickness t and refractive index n is introduced in front of one of the slits, the position of the fringes:
a) Remains unchanged
b) Shifts towards the thin film
c) Shifts away from the thin film
d) Completely disappears
When a light wave is polarized by reflection at a particular angle of incidence, the reflected light is:
a) Completely polarized
b) Partially polarized
c) Unpolarized
d) Depolarized
The angle between the plane of polarization of the incident light and the plane of reflection for which the reflected light is completely polarized is called:
a) Brewster’s angle
b) Critical angle
c) Angle of incidence
d) Angle of reflection
The refractive index of a medium is found to be 1.5 for blue light and 1.6 for red light. The dispersive power of the medium is:
a) 0.1
b) 0.2
c) 0.5
d) 1.0
The width of the central maximum in a single-slit diffraction pattern depends on the:
a) Wavelength of light only
b) Width of the slit only
c) Distance between the slit and the screen only
d) All of the above
In a diffraction grating experiment, if the distance between the grating and the screen is doubled, the number of fringes observed:
a) Doubles
b) Halves
c) Remains the same
d) Becomes zero
The separation between two adjacent orders of spectra produced by a diffraction grating is:
a) Independent of the wavelength of light
b) Directly proportional to the wavelength of light
c) Inversely proportional to the wavelength of light
d) Proportional to the square of the wavelength of light
The diameter of a circular aperture is 1.0 mm. The wavelength of light used is 500 nm. The distance from the aperture to the screen is 1.0 m. What is the diameter of the central bright spot on the screen?
a) 0.25 mm
b) 0.50 mm
c) 1.0 mm
d) 2.0 mm
In a Young’s double-slit experiment, the distance between the slits is d and the distance between the slits and the screen is D. If the distance between the central maximum and the first minimum is x, the wavelength of the light used is:
a) xD/d
b) dD/x
c) xd/D
d) D/dx
In a Fresnel’s biprism experiment, if the angle between the two refracting faces of the prism is 20° and the distance between the prism and the screen is 1.0 m, the fringe width is found to be 2 mm. What is the wavelength of the light used?
a) 320 nm
b) 480 nm
c) 640 nm
d) 800 nm
In a diffraction grating experiment, the angle of diffraction for the first order spectrum is 30° for a wavelength of 600 nm. What will be the angle of diffraction for the second order spectrum for the same grating?
a) 15°
b) 30°
c) 45°
d) 60°
A lens of focal length 20 cm is placed in front of a circular aperture of diameter 2 mm. The distance between the aperture and the screen is 100 cm. What is the diameter of the central bright spot on the screen?
a) 0.4 mm
b) 0.8 mm
c) 1.0 mm
d) 2.0 mm
A diffraction grating with 300 lines/mm is used to observe the spectra of a light source. The distance between the grating and the screen is 1.0 m. What is the angle between the first order spectra of two wavelengths 600 nm and 700 nm?
a) 11.4°
b) 12.6°
c) 13.9°
d) 15.1°
In a Michelson’s interferometer experiment, the path difference between the two interfering beams is 1 μm. If the wavelength of the light used is 500 nm, the number of fringes observed is:
a) 0.5
b) 1
c) 2
d) 4
In a double-slit experiment, the separation between the slits is 0.1 mm and the distance between the slits and the screen is 2.0 m. If the distance between the central maximum and the fifth bright fringe is 4.0 mm, what is the wavelength of the light used?
a) 600 nm
b) 500 nm
c) 400 nm
d) 300 nm
In a diffraction experiment, a beam of light is passed through a single slit of width 0.2 mm. If the distance between the slit and the screen is 2.0 m and the wavelength of light is 600 nm, what is the width of the central bright fringe on the screen?
a) 0.3 mm
b) 0.6 mm
c) 1.2 mm
d) 2.4 mm
A lens of focal length 50 cm is used to produce interference fringes using a parallel beam of light of wavelength 500 nm. If the distance between the lens and the screen is 2.0 m, what is the fringe width?
a) 0.5 mm
b) 1.0 mm
c) 1.5 mm
d) 2.0 mm
In a Michelson’s interferometer experiment, if the number of fringes observed when the mirror is moved by a distance of 1 μm is 20, what is the wavelength of the light used?
a) 500 nm
b) 600 nm
c) 700 nm
d) 800 nm
In a Young’s double-slit experiment, the separation between the slits is 0.1 mm and the distance between the slits and the screen is 1.0 m. If the distance between the central maximum and the fourth bright fringe is 1.2 cm, what is the wavelength of the light used?
a) 600 nm
b) 500 nm
c) 400 nm
d) 300 nm
In a Fresnel’s biprism experiment, if the angle between the two refracting faces of the prism is 15° and the distance between the prism and the screen is 1.0 m, what is the distance between two consecutive bright fringes?
a) 1.5 mm
b) 2.0 mm
c) 2.5 mm
d) 3.0 mm
In a diffraction grating experiment, the angle of diffraction for the first order spectrum is 20° for a wavelength of 500 nm. What will be the angle of diffraction for the third order spectrum for the same grating?
a) 60°
b) 40°
c) 20°
d) 80°
A plane transmission grating with 5000 lines/cm is used to observe the spectra of a light source. The distance between the grating and the screen is 1.0 m. What is the angle between the first order spectra of two wavelengths 600 nm and 700 nm?
a) 11.7°
b) 12.8°
c) 13.9°
d) 15.0°
A double-slit experiment is performed using light of wavelength 500 nm. If the separation between the slits is 0.1 mm and the distance between the slits and the screen is 1.0 m, what is the distance between the central maximum and the second minimum?
a) 1.2 mm
b) 2.4 mm
c) 3.6 mm
d) 4.8 mm
In a Fresnel’s biprism experiment, the angle between the two refracting faces of the prism is 10° and the distance between the prism and the screen is 1.0 m. What is the distance between two consecutive dark fringes?
a) 1.0 mm
b) 1.2 mm
c) 1.4 mm
d) 1.6 mm
A parallel beam of light is passed through a diffraction grating with 5000 lines/cm. If the distance between the grating and the screen is 1.0 m, what is the angular separation between the first and second order spectra of a wavelength of 600 nm?
a) 12°
b) 24°
c) 36°
d) 48°
In a Young’s double-slit experiment, the separation between the slits is 0.05 mm and the distance between the slits and the screen is 1.0 m. If the distance between the central maximum and the fourth dark fringe is 1.5 cm, what is the wavelength of the light used?
a) 400 nm
b) 500 nm
c) 600 nm
d) 700 nm
In a Fresnel’s biprism experiment, if the angle between the two refracting faces of the prism is 20° and the distance between the prism and the screen is 1.0 m, what is the width of the interference fringes?
a) 0.6 mm
b) 1.2 mm
c) 1.8 mm
d) 2.4 mm
A diffraction grating with 5000 lines/cm is used to observe the spectra of a light source. The distance between the grating and the screen is 2.0 m. What is the angular separation between the first and second order spectra of a wavelength of 600 nm?
a) 0.12°
b) 0.24°
c) 0.36°
d) 0.48°
In a diffraction grating experiment, the angle of diffraction for the first order spectrum is 30° for a wavelength of 600 nm. What will be the angle of diffraction for the second order spectrum for the same grating?
a) 60°
b) 45°
c) 30°
d) 15°
We hope there NEET MCQ of Class 12 Wave Optics will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
