Physical Optics MCQs

Option A: Diffraction

Option B: Polarization

Option C: Interference

Option D: Reflection

Correct Answer: Diffraction ✔

Option A: Newton

Option B: Einstein

Option C: Michelson

Option D: Galileo

Correct Answer: Michelson ✔

Option A: luminous

Option B: non-luminous

Option C: incandescent

Option D: bright

Correct Answer: luminous ✔

Option A: equally spaced

Option B: distance between them increases

Option C: distance between then decreases

Option D: they are adjacent with no space in between

Correct Answer: distance between then decreases ✔

Option A: plane polarized

Option B: un-polarized

Option C: circularly polarized

Option D: elliptically polarized

Correct Answer: plane polarized ✔

Option A: 500 mm

Option B: 5 x 10-3 mm

Option C: 2 x 10-5 mm

Option D: 2 x 10-3 mm

Correct Answer: 2 x 10-3 mm ✔

Option A: more for a round edge

Option B: less for a round edge

Option C: more for a sharp edge

Option D: less for a sharp edge

Correct Answer: more for a sharp edge ✔

Option A: 60°

Option B: 90°

Option C: 180°

Option D: 45°

Correct Answer: 180° ✔

Option A: diffraction

Option B: dispersion

Option C: interference

Option D: polarization

Correct Answer: interference ✔

Option A: Newton

Option B: Michelson

Option C: Huygen

Option D: Young

Correct Answer: Michelson ✔

Option A: same wavelength

Option B: same amplitude of vibration

Option C: same wave length with constant phase difference

Option D: same amplitude and wavelength

Correct Answer: same wave length with constant phase difference ✔

Option A: crest

Option B: trough

Option C: wavelength

Option D: wave front

Correct Answer: wave front ✔

Option A: bright

Option B: dark for large wavelength

Option C: dark

Option D: bright for large wavelength

Correct Answer: bright ✔

Option A: waves

Option B: particles

Option C: photons

Option D: it was not his discovery

Correct Answer: photons ✔

Option A: 15 minutes

Option B: 10 minutes

Option C: 8 minutes

Option D: 8 minutes 30 seconds

Correct Answer: 8 minutes ✔

Option A: thickness of the film only

Option B: nature of the film only

Option C: angle of indidence only

Option D: all thickness nature and angle of incidence

Correct Answer: all thickness nature and angle of incidence ✔

Option A: sugar

Option B: tartaric acid

Option C: water

Option D: sodium chlorate

Correct Answer: water ✔

Option A: Convex lens

Option B: Interferometer

Option C: Diffraction grating

Option D: Concave

Correct Answer: Diffraction grating ✔

Option A: Interference

Option B: Diffraction

Option C: Polarization

Option D: Refraction

Correct Answer: Diffraction ✔

Option A: no interference fringes are observed

Option B: no diffraction fringes are observed

Option C: no fringes observed

Option D: interference pattern not disturbed

Correct Answer: no interference fringes are observed ✔

Option A: black

Option B: purple

Option C: green

Option D: no scientific reasoning available

Correct Answer: black ✔

Option A: radio waves

Option B: ultraviolot rays

Option C: X-rays

Option D: sound waves

Correct Answer: sound waves ✔

Option A: vibration in all direction

Option B: vibration in two mutually perpendicular directions

Option C: vibration take place in a direction perpendicular to the direction of propagation of light

Option D: no vibration at all

Correct Answer: vibration take place in a direction perpendicular to the direction of propagation of light ✔

Option A: 4 x 10-10 m

Option B: 2 x 10-10 m

Option C: 0.02×10-10m

Option D: 20×10-10m

Correct Answer: 2 x 10-10 m ✔

Option A: 5000 nm

Option B: 5000A

Option C: 500m

Option D: 2000um

Correct Answer: 5000A ✔

Option A: diffraction

Option B: reflection

Option C: polarization

Option D: scattering

Correct Answer: scattering ✔

Option A: bright fringes are wider than dark fringes

Option B: dark fringes are wider than bright fringe

Option C: both dark and bright fringes are of equal width

Option D: central fringes are brighter than the outer fringes

Correct Answer: both dark and bright fringes are of equal width ✔

Option A: alternate dark and bright fringes will be seen

Option B: coloured fringes will be seen

Option C: no interference fringes will be seen

Option D: impossible to predict

Correct Answer: coloured fringes will be seen ✔

Option A: polarization

Option B: constructive interference

Option C: destructive interference

Option D: diffraction

Correct Answer: destructive interference ✔

Option A: light form fluorescent tube

Option B: light form neon lamp

Option C: light form sodium lamp

Option D: light form simple lamp

Correct Answer: light form sodium lamp ✔

Option A: a cylindrical wave front

Option B: an elliptical wave front

Option C: a spherical wave front

Option D: a plane wave front

Correct Answer: a spherical wave front ✔

Option A: reflection

Option B: refraction

Option C: diffraction

Option D: polarization

Correct Answer: polarization ✔

Option A: Hertz

Option B: Fresnel

Option C: Einstein

Option D: Plank

Correct Answer: Einstein ✔

Option A: velocity

Option B: wavelength

Option C: amplitude

Option D: frequency

Correct Answer: frequency ✔

Option A: interference fringes only

Option B: diffraction fringes only

Option C: both interference and diffraction fringes

Option D: polirized frringes

Correct Answer: both interference and diffraction fringes ✔

Option A: vibrating plane

Option B: polarization plane

Option C: diffraction plane

Option D: interference plane

Correct Answer: polarization plane ✔