Q16.In young's double slit experiment performed using a monochromatic light of wavelength λ , when a glass plate (μ = 1. 5) of thickness xλ is introduced in the path of the one of the interfering beams, the intensity at the position where the central maximum occurred previously remains unchanged. The value of x will be (1) 3 (2) 2 (3) 1. 5 (4) 0. 5
What This Question Tests
This question tests the understanding of how inserting a glass plate in one path changes the optical path difference and causes a shift in the central maximum, requiring conditions for constructive interference.
Concepts Tested
Formulas Used
Δx_optical = (μ - 1)t
Condition for central maximum: Δx_optical = nλ
📚 NCERT Sections This Tests
10.5 — In Young’S Double-Slit Experiment Using Monochromatic Light Of
Physics Class 12 · Chapter 10
10.5 In Young’s double-slit experiment using monochromatic light of wavelength l, the intensity of light at a point on the screen where path difference is l, is K units. What is the intensity of light at a point where path difference is l/3?
10.4 — In A Young’S Double-Slit Experiment, The Slits Are Separated By
Physics Class 12 · Chapter 10
10.4 In a Young’s double-slit experiment, the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in the experiment.
10.1 — Monochromatic Light Of Wavelength 589 Nm Is Incident From Air On A
Physics Class 12 · Chapter 10
10.1 Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? Refractive index of water is 1.33.
📋 Question Details
- Chapter
- Wave Optics
- Topic
- Interference and Optical Path Difference
- Year
- 2022
- Shift
- 28 Jun Shift 2
- Q Number
- Q16
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 10: Wave Optics
More from this Chapter
Q67.Wavelength of light used in an optical instrument are λ1 = 4000Å and λ2 = 5000Å, then ratio of their respective resolving powers (corresponding to λ1 and λ2 ) is (1) 16 : 25 (2) 9 : 1 (3) 4 : 5 (4) 5 : 4
Q66.To demonstrate the phenomenon of interference, we require two sources which emit radiation (1) of nearly the same frequency (2) of the same frequency (3) of different wavelengths (4) of the same frequency and having a definite phase relationship
Q66.The angle of incidence at which reflected light totally polarized for reflection from air to glass (refractive index n ), is (1) sin−1(n) (2) sin−1(1/n) (3) tan−1(1/n) (4) tan−1(n)
Q67.The maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young's double-slit experiment is (1) infinite (2) five (3) three (4) zero