Q16.A monochromatic light of wavelength 6000 A is incident on the single slit of width 0 . 01 mm. If the diffraction pattern is formed at the focus of the convex lens of focal length 20 cm, the linear width of the central maximum is : (1) 60 mm (2) 24 mm (3) 120 mm (4) 12 mm
What This Question Tests
This problem requires applying the formula for the linear width of the central maximum in a single-slit diffraction pattern, using the wavelength, slit width, and focal length of the lens.
Concepts Tested
Formulas Used
sinθ ≈ θ = λ/a
Linear Width = 2Dθ = 2Dλ/a
📚 NCERT Sections This Tests
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.
10.5 — 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?
10.2 — What Is The Shape Of The Wavefront In Each Of The Following Cases:
Physics Class 12 · Chapter 10
10.2 What is the shape of the wavefront in each of the following cases: (a) Light diverging from a point source. (b) Light emerging out of a convex lens when a point source is placed at its focus. (c) The portion of the wavefront of light from a distant star intercepted by the Earth.
📋 Question Details
- Chapter
- Wave Optics
- Topic
- Single Slit Diffraction
- Year
- 2024
- Shift
- 01 Feb Shift 1
- 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