MCQ on Polarization of Light. We covered all the MCQ on Polarization of Light in this post for free so that you can practice well for the exam.
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MCQ on Polarization of Light for NEET Students
(A) Linear width of central maximum.
(B) The angular width of the central maximum.
(C) Both linear and angular widths of central maximum.
(D) Slit width.
Option c – Both linear and angular widths of central maximum.
An unpolarised ordinary light, at a given instant
(A) can be considered as a superposition of two mutually perpendicular polarised lights
(B) possessing one-sidedness.
(C) restricted to the vertical plane only.
(D) is restricted to one plane only.
Option a – can be considered as a superposition of two mutually perpendicular polarised lights
A plane mirror upon which light is incident at an angle of 40° is rotated through 15° then the angle of deviation is
(A) 15°
(B) 30°
(C) 45°
(D) 70°
Option d – 70°
An object is kept in front of a concave mirror of a focal length of 40 cm. The image formed is four times the size of the object. The two possible distances of the object are
(A) u=-20 cm and u = – 10 cm
(B) u = -50 cm and u = – 10 cm
(C) u = – 20 cm and u = – 30 cm
(D) u = -50 cm and u = – 30 cm
Option d – u = – 50 cm and u = – 30 cm
An unpolarised light beam of transverse waves is one whose vibrations
(A) are confined to a single plane.
(B) occur in all directions.
(C) have not passed through the polarised discs.
(D) occur in all directions perpendicular to their direction of motion.
Option d – occur in all directions perpendicular to their direction of motion.
If an object and observer are situated in different media, which of the following relation is impossible?
(A) Real depth > Apparent depth
(B) Real depth < Apparent depth
(C) Real depth = Apparent depth
(D) None of the above
Option d – None of the above
The center of the diffraction pattern in Fraunhofer diffraction is
(A) always dark.
(B) always bright.
(C) dark for lower frequencies and bright for higher frequencies.
(D) dark for short wavelengths and bright for long wavelengths.
Option b – always bright.
Using the same experimental setup diffraction patterns for a red light and green light are obtained then, and
(A) both diffraction patterns will be identical and white-colored.
(B) both diffraction patterns are identical except for colors.
(C) the diffraction pattern produced by red light will be wider than the diffraction pattern produced by green light.
(D) the diffraction pattern produced by green light will be wider than the diffraction pattern produced by red light.
Option c – the diffraction pattern produced by red light will be wider than the diffraction pattern produced by green light.
Diffraction due to a single slit can be explained on the basis of interference of
(A) spherical wavefronts emanating from a point source.
(B) cylindrical wavefronts emanating from a point source.
(C) secondary wavelets emerge after primary wavefronts pass through slits.
(D) primary wavefronts refracted through the slit.
Option c – secondary wavelets emerge after primary wavefronts pass through slits.
First diffraction minima due to a single slit of width 0.08 μm is at 30°, then the wavelength of light used is
(A) 400 Å
(B) 500 Å
(C) 600 Å
(D) 700 Å
Option a – 400 Å
A ray of light from the air is incident on the surface of the glass with the angle of incidence equal to the angle of polarization. It suffers a deviation of 22° on entering a glass. The angle of polarization is
(A) 56°
(B) 53°25′
(C) 34°
(D) 51°
Option a – 56°
A plane-polarized light is an incident normally on a tourmaline plate. If the percentage difference between initial and final intensities is 75, then the angle made by E vectors of light with the optic axis of the plate is
(A) 60°
(B) 45°
(C) 30°
(D) 15°
Option a – 60°
The reciprocal of the smallest angular separation between two distinct objects, so that they are just resolved and seen through the optical instrument, is ………
(A) resolving power of the convex lens
(B) the magnifying power of a telescope
(C) resolving the power of the telescope
(D) the magnifying power of the convex lens
Option c – resolving the power of the telescope
Brewster’s law is based on ……….
(A) polarization by scattering
(B) polarization by reflection
(C) polarization by refraction
(D) polarization by selective absorption
Option b – polarization by reflection
For a specific wavelength of light, the resolving power of the telescope shows a direct linear relationship with
(A) the focal length of the eye-piece.
(B) the focal length of the objective lens.
(C) length of the telescope.
(D) diameter of the objective lens.
Option d – diameter of the objective lens.
Assertion: Ultrasonic waves can be polarised. Reason: Ultrasonic waves are mechanical waves.
(A) The assertion is True, Reason is True; Reason is a correct explanation for Assertion.
(B) The assertion is True, and Reason is True; Reason is not a correct explanation for Assertion.
(C) The assertion is True, Reason is False.
(D) The assertion is False, Reason is True.
Option d – The assertion is False, Reason is True.
Assertion: Diffused reflection is basically the reflection of light in a random manner. Reason: Reflection of light from a rough, irregular surface occurs in a random manner.
(A) The assertion is True, Reason is True; Reason is a correct explanation for Assertion.
(B) The assertion is True, and Reason is True; Reason is not a correct explanation for Assertion.
(C) The assertion is True, Reason is False.
(D) The assertion is False, Reason is True.
Option a – The assertion is True, Reason is True; Reason is a correct explanation for Assertion.
In double refraction,
(A) only the ordinary ray is polarised.
(B) only the extraordinary ray is polarised.
(C) both ordinary and extraordinary rays are polarised.
(D) neither ordinary ray nor extraordinary ray is polarised.
Option c – both ordinary and extraordinary rays are polarised.
Mode / Modes of production of plane polarised light is/are ……..
(A) selective absorption
(B) reflection
(C) double refraction
(D) all of the above
Option d – all of the above
When light reflected from the surface of the glass plate is found to be linearly polarized its angle of refraction in glass is 30°. The Refractive index of a glass plate is
(A) 1.14
(B) 1.41
(C) 1.57
(D) 1.73
Option d – 1.73
If a slit in single-slit diffraction is replaced by a circular aperture then,
(A) there will be no diffraction pattern.
(B) there will be no change in the diffraction pattern.
(C) the pattern will be circular instead of stripped at the center followed by alternate dark and bright rings.
(D) the pattern will only have a central bright spot.
Option c – the pattern will be circular instead of stripped at the center followed by alternate dark and bright rings.
A microscope will have maximum resolving power if it uses to illustrate the specimen by the light of ……….
(A) red color
(B) yellow color
(C) green color
(D) blue color
Option d – blue color
The first minimum of a single slit diffraction pattern is observed at an angle of 1.8° with a light of wavelength 700 nm. The width of this slit is
(A) 2 mm
(B) 0.2 mm
(C) 0.02 mm
(D) 0.002 mm
Option c – 0.02 mm
Assertion: By using polaroid the unpolarised light and polarised light can be distinguished from each other. Reason: A polaroid does not transmit unpolarised light.
(A) The assertion is True, Reason is True; Reason is a correct explanation for Assertion.
(B) The assertion is True, and Reason is True; Reason is not a correct explanation for Assertion.
(C) The assertion is True, Reason is False.
(D) The assertion is False, Reason is True.
Option c – The assertion is True, Reason is False.
The phenomenon of diffraction is applicable for ……… ( MCQ on Polarization of Light )
(A) light waves only
(B) polarized waves only
(C) waves obtained from coherent sources only
(D) none of the above
Option d – none of the above
We covered all the MCQ on polarization of light above in this post for free so that you can practice well for the exam.
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