Read and download free pdf of CBSE Class 12 Physics Interference of Light Solved Examples. Students and teachers of Class 12 Physics can get free advanced study material, revision notes, sure shot questions and answers for Class 12 Physics prepared as per the latest syllabus and examination guidelines in your school. Class 12 students should download this study material which will give them more knowledge for all chapters in Physics and all important topics which are scoring and can get you more marks. Students should also download free pdf of Chapter wise Notes for Class 12 Physics prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this year and also download free worksheets and question papers available here to get higher scores in school exams and tests, also click here for more Study Material for Class 12 Physics
Study Material for Class 12 Physics Interference of Light
Class 12 Physics students should refer to the following Pdf for Interference of Light in Class 12. These notes and test paper with questions and answers for Class 12 Physics will be very useful for exams and help you to score good marks
Class 12 Physics Interference of Light
CBSE Class 12 Physics Interference of Light Solved Examples. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.
Ex.1 Consider interference between waves from two sources of Intensites I & 4I. Find intensities at points where the phase difference is π.
(A) I (B) 5I (C) 4I (D) 3I
Sol. I = R2 = a1 2 + a2 2 + 2a1 a2 cos δ = I + 4I + 4I cos π I = 5I – 4I = I
Ex.2 The width of one of the two slits in a Young's double slit experiment is double of the other slit. Assuming that the amplitude of the light coming from a slit is proportional to slit-width. Find the ratio of the maximum to the minimum intensity in the interference pattern.
(A) 34 : 1 (B) 9 : 1 (C) 4 : 1 (D) 16 : 1
Sol. Suppose the amplitude of the light wave coming from the narrower slit is A and that coming from the wider slit is 2A. The maximum intensity occurs at a place where constructive interference takes place. Then the resultant amplitude is the sum of the individual amplitudes. Thus, Amax = 2A + A = 3A The minimum intensity occurs at a place where destructive interference takes place. The resultant amplitude is then difference of the individual amplitudes.
Ex.3 The intensity of the light coming from one of the slits in a young's double slit experiment is double the intensity from the other slit. Find the ratio of the maximum intensity to the minimum intensity in the interference fringe pattern observed.
(A) 9 : 1 (B) 34 : 1 (C) 4 : 1 (D) 16 : 1
Ex. 5 The equation of two light waves are y1 = 6coswt, y2 = 8cos(wt + φ). The ratio of maximum to minimum intensities produced by the superposition of these waves will be
(A) 49 : 1 (B) 1 : 49 (C) 1 : 7 (D) 7 : 1
Ex. 6 In a Young's slit experiment, the separation between the slits is 0.10 mm, the wavelength of light used is 600 nm and the interference pattern is observed on a screen 1.0 m away.Find the separation between the successive bright fringes.
(A) 6.6 mm (B) 6.0 mm (C) 6 m (D) 6 cm.
Sol. The separation between the sucessive bright fringes is-
β =Dλ/d
β = 6.0 mm.
Ex. 7 Two waves originating from source S1 and S2 having zero phase difference and common wavelength λ will show completely destructive interference at a point P if (S1 P – S2 P) is- [MP PMT, 87]
(A) 5λ (B) 3λ/4 (C) 2λ (D) 11λ/2
Ex. 9 In Young's experiment the wavelength of red light is 7.5 × 10–5 cm. and that of blue light 5.0 × 10–5 cm. The value of n for which (n + 1)th the blue bright band coincides with nth red band is-
(A) 8 (B) 4 (C) 2 (D) 1
Ex. 10 In Young's double slit experiment, carried out with light of wavelength λ = 5000 Aº, the distance between the slits is 0.2 mm and the screen is at 200 cm from the slits. The central maximum is at x = 0. The third maximum will be at x equal to.
(A) 1.67 cm (B) 1.5 cm (C) 0.5 cm (D) 5.0 cm.
Ex. 11 Two slits separated by a distance of 1mm are illieminated with red light of wavelength 6.5 × 10-7 m. The interference fringes are observed on a screen placed 1m from the slits. The distance between third dark fringe & the fifth bright fringe is equal to.
(A) .65 mm (B) 1.63 mm (C) 3.25 mm (D) 4.87 mm.
Sol. β =λD/d = 3= 6.5 ×10-7 ×1
β = .65 × 10–3 m = .65 mm
The distance between fifth bright fringe from third dark fringe = 2.5 β=2.5×.65 = 1.63 mm.
Ex. 12 In an experiment the two slits are 0.5 mm apart and the fringes are observed to 100 cm from the plane of the slits. The distance of the 11th bright fringe from the Ist bright fringe is 9.72 mm. Calculate the wavelength.
(A) 4.85 × 10–5 cm (B) 4.85 × 10–5 m (C) 4.86 × 10–7 m (D) 4.86 × 10–5 cm
Please click on below link to download pdf file for CBSE Class 12 Physics Interference of Light Solved Examples
CBSE Class 12 Physics Dual Nature Of Matter Frequently Asked Questions |
CBSE Class 12 Physics Dual Nature Of Matter and Radiation chapter notes and important questions |
CBSE Class 12 Physics Semi Conductor Devices Concept Map |
More Study Material
CBSE Class 12 Physics Interference of Light Study Material
We hope students liked the above Study Material for Interference of Light designed as per the latest syllabus for Class 12 Physics released by CBSE. Students of Class 12 should download the Study Material in Pdf format, read the notes and related questions and solutions given in above Class 12 Physics Study Material on daily basis. All latest Study Material have been developed for Physics by referring to the most important and regularly asked topics which the students should learn and practice to get better score in school tests and examinations. Studiestoday is the best portal for Class 12 students to get all latest study material free of cost.
Study Material for Physics CBSE Class 12 Interference of Light
Expert teachers of studiestoday have referred to NCERT book for Class 12 Physics to develop the Physics Class 12 Study Material. If you download Study Material for the above chapter daily, you will get higher and better marks in Class 12 test and exams in the current year as you will be able to have stronger understanding of all concepts. Daily reading of Physics study material will help students to have stronger understanding of all concepts and also make them expert on all critical topics. You can easily download and save all Study Material for Class 12 Physics also from www.studiestoday.com without paying anything in Pdf format. After solving the questions given in the Study Material which have been developed as per latest course books also refer to the NCERT solutions for Class 12 Physics designed by our teachers
Interference of Light Study Material Physics CBSE Class 12
All Study Material given above for Class 12 Physics have been made as per the latest syllabus and books issued for the current academic year. The students of Class 12 can refer to the answers which have been also provided by our teachers for all Study Material of Physics so that you are able to solve the questions and then compare your answers with the solutions provided by us. We have also provided lot of MCQ questions for Class 12 Physics so that you can solve questions relating to all topics given in each chapter. Also download Class 12 Physics Sample Papers given on studiestoday.
Interference of Light CBSE Class 12 Study Material Physics
Regular Study Material reading helps to gain more comprehensive understanding of Interference of Light concepts. Study Material play an important role in developing understanding of Interference of Light in CBSE Class 12. Students can download and save or print all the Study Material, printable assignments, practice sheets of the above chapter in Class 12 Physics in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 12 Physics MCQ Test for the same chapter
CBSE Study Material Physics Class 12 Interference of Light
CBSE Class 12 Physics best textbooks have been used for writing the problems given in the above Study Material. If you have tests coming up then you should revise all concepts relating to Interference of Light and then take out print of the above Study Material and attempt all problems. We have also provided a lot of other Study Material for Class 12 Physics which you can use to further make yourself better in Physics.
You can download free study material for Class 12 Physics Interference of Light for latest academic session from StudiesToday.com
Yes, you can click on the link above and download PDFs for Class 12 Physics Interference of Light easily for regular use
Yes, the study material given here for Class 12 Physics Interference of Light is for current CBSE session
You, just click the link above and save Class 12 study material for Physics Interference of Light in Pdf
All study maetrial for CBSE Class 12 Physics Interference of Light is free
www.studiestoday.com is the best portal for Interference of Light Physics Class 12 study material
Visit www.studiestoday.com for best study material for Class 12 Physics Interference of Light
All study material for various topics of Class 12 Physics Interference of Light as per latest CBSE syllabus is avaiable here