Physics Class 12 MCQ Wave Optics – Chapter 10

Inside the Article

Practice some of the very important physics class 12 MCQ from Wave Optics and score good in your examination. Wave Optics is a scoring subject, so if you practice questions from it with complete dedication then your chances of improving your grades will definitely increase.

Physics Class 12 MCQ Magnetism And Matter – Chapter 5

Physics Class 12 MCQ Electromagnetic Induction – Chapter 6

Physics Class 12 MCQ Wave Optics – Chapter 10

Ques 1: A plane wave passes through a convex lens. The geometrical shape of the wavefront that emerges is

• plane
• diverging spherical
• converging spherical
• none of these

converging spherical

• 00
• 450
• 900
• 1800

1800

Ques 3: In YDSE, when separation between two slits is increased, fringe width

• decreases
• increases
• remains the same
• none of these

decreases

• red
• violet
• green
• same for all

red

• I
• I/2
• I/4
• 2 I

I/4

• 1 : √2
• √2 : 1
• 1 : 2
• 2 : 1

1 : 2

• 5 m
• 8 m
• 10 m
• 40 m

8 m

• doubled
• halved
• unaffected

halved

• 1.732
• 1
• 1.414
• 2

1.732

• X-rays
• sound waves
• light waves

sound waves

• interference
• diffraction
• dispersion
• polarization

polarization

• 450
• 600
• 300
• 900

450

• 100%
• 50%
• 25%
• 75%

50%

Physics MCQs for Class 12 With Answers Chapter 10 Wave Optics

• 30%
• 100%
• 12.5%
• 37.5%

12.5%

• 6.6 mm
• 6.0 mm
• 6 m
• 60 cm

6.0 mm

• parabola
• Hyperbola
• ellipse
• Spiral

Hyperbola

Ques 17: The light source used in Young’s bouble slit experiment are

• Incoherent
• Coherent
• White light
• Blue-green-red light

Coherent

• Increases
• Decreases
• Constant
• Not defined

Constant

Ques 19: The phase difference between two waves at the place of constructive interference is given as a

• multiple of π
• multiple of (2n-1)π
• even multiple of π
• odd multiple of π

even multiple of π

Ques 20: The path difference between two waves at the place of destructive interference is given by :

• multiple of λ
• multiple of λ/2
• even multiple of λ/2
• odd multiple of λ/2

odd multiple of λ/2

Ques 21: Resolving Power of Microscope depends upon

• Focal Length
• Wavelength
• Diameter
• Wavelength, Diameter of lens

Wavelength, Diameter of lens

Wave Optics MCQ Questions for Class 12

Ques 22: Angular width of interference fringe depends on

• Distance between Slit and Screen
• Wavelength of light
• Ration of the wavelength and Slit width
• Width of Slit

Wavelength of light

Ques 23: Resolving Power of the telescope depends upon the

• Diameter of circular aperture
• Focal length
• Magnification power
• Refractive index

Diameter of circular aperture

Ques 24: In teh phenomena of Diffraction of light when the violet light is used in the experiment instead of red light then

• Fringe width increases
• No change in fridge width
• Fringe width decreases
• Colour pattern is formed

Fringe width decreases

Ques 25: Diffraction aspect is easier to notice in case of the sound waves than in case of the light waves because sound waves

• Have longer wavelength
• Shorter wavelength
• Longitudinal wave
• Transverse waves

Have longer wavelength

• Spherical
• plane
• Cylindrical
• Rectangular

plane

• Diffraction
• Refraction
• Dispersion
• Interference

Interference

• Z = d2
• Z = d/λ
• Z = d/λ2
• Z = dλ

Z = d2

• 150
• 300
• 450
• 600

600

Ques 30: The shape of interference fringes in YDSE, when distance between slit and screen is very large as compared to fringe width is

• straight lines
• parabolic
• circular
• hyperbolic

straight lines

Physics Chapter Wise MCQ Questions and Answers We hope you liked the questions provided above of Wave Optics Chapter 10 Physics Class 12. In case you want some additional stuff, you may contact us via comment box.

Updated: January 3, 2022 — 8:40 am