MCQ Questions for Class 12 Physics Chapter 10 Wave Optics Part-2 with Answers

Wave Optics Part-2 Class 12 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Physics Chapter 10 Wave Optics Part-2 with Answers Pdf free download. MCQ Questions for Class 12 Physics with Answers were prepared based on the latest exam pattern. We have Provided Wave Optics Part-2 Class 12 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 12 Physics Chapter 10 Quiz

Class 12 Physics Chapter 10 MCQ Online Test

You can refer to NCERT Solutions for Class 12 Physics Chapter 10 Wave Optics Part-2 to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Wave Optics Part-2 Class 12 Physics MCQ online test

Q1.	In vacuum, the speed of light depends upon :
	A.frequency
	B.velocity
	C.wave length
	D.None of these

Ans: None of these

Q2.	The fringe width (β) of a diffraction pattern and the slit width d are related as:
	A.β ∝ d
	B.β ∝\(\frac{1}{d}\)
	C.β ∝ √d
	D.β ∝ \(\frac{1}{d^2}\)

Ans: β ∝\(\frac{1}{d}\)

Q3.	C.V. Raman was awarded the Nobel prize for his work associated with which of the following phenomenon of radiations?
	A.scattering
	B.diffraction
	C.interference
	D.polarisation

Ans: scattering

Q4.	Light takes 10^-10 to cross a glass slab. What is the thickness of the glass slab?
	A.2 cm
	B.3 cm
	C.2.5 cm
	D.3.5 cm

Ans: 3 cm

Q5.	In Young’s double slit experiment, the central point on the screen is:
	A.bright
	B.dark
	C.first bright and later dark
	D.first dark and later bright

Ans: bright

Q6.	Between the slit is id\ the distance between the slit and the screen is α, with light of wavelength λ, the number of fringe observed per metre on the screen is:
	A.\(\frac{δy}{α}\)
	B.\(\frac{Dα}{λ}\)
	C.\(\frac{α}{Dλ}\)
	D.\(\frac{λd}{D}\)

Ans: \(\frac{δy}{α}\)

Q7.	In Young’s double slit experiment the distance between the slit and the screen is doubled and the separation between the slit is reduced to half. The fringe width:
	A.is doubled
	B.become four time
	C.is halfed
	D.remain unchanged

Ans: become four time

Q8.	In a Young’s double slit experiment the distance between the slit is 1 mm and the distance of screen from the slit is 1 m. If light of wavelength 6000 A is used then the fringe width is:
	A.0.4 mm
	B.0.5 mm
	C.0.6 mm
	D.0.8 mm

Ans: 0.6 mm

Q9.	A person cannot see object clearly beyond 50 cm. The pow er of the lens to correct his vision is :
	A.+0.5 dioptre
	B.-0.5 dioptre
	C.-2 dioptre
	D.+2 dioptre

Ans: -2 dioptre

Q10.	A phase difference of 5π corresponds to a path difference (in terms of λ) of:
	A.5λ
	B.10λ.
	C.5λ/2
	D.2λ

Ans: 5λ/2

Q11.	A polaroid produces a strong beam of light which is :
	A.circularly polarised
	B.elliptically polarised
	C.plane polarised
	D.unpolarised

Ans: plane polarised

Q12.	Images of a distant lamp seen through a fire cloth rotate on rotating the cloth. This is due to the phenomenon of:
	A.interference
	B.diffraction
	C.polarisation
	D.scattering

Ans: diffraction

Q13.	A young’s double slit experiment uses a monochromatic source. The shape of interference fringes formed on a screen is :
	A.parabola
	B.straight line
	C.circle
	D.hyperbola

Ans: straight line

Q14.	A monochromatic light is refracted from air into a glass of refractive index µ. The ratio of the wavelengths of the incident and the refracted waves is:
	A.1 : µ
	B.1 : µ²
	C.µ : 1
	D.µ² : 1