9394949438

[LATEST]$type=sticky$show=home$rm=0$va=0$count=4$va=0


 




  Wave Optics Quiz-20

Dear Readers,


As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background. Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1.  . At two points 𝑃 and 𝑄 on screen in Young's double slit experiment. Waves from slits 𝑆1 and 𝑆 have a path difference of 0 and πœ†/4 respectively. The ratio of intensities at P and Q will be
  •   3 ∶ 2
  •   2 ∶ 1
  • √2 ∶ 1
  •   4 ∶ 1
Solution
Let 𝐼0 is intensity of light emitted from the source,
then Resultant intensity
 πΌ = 4𝐼0 cos2 πœ™/2 
 πΌ1 = 4𝐼0 cos2 πœ™/2 = 4𝐼0 
Now, ∆π‘₯ = πœ†/4 
 Ο• =2πœ‹/πœ†× ∆π‘₯ =2πœ‹/πœ†×πœ†/4 
 Ο• = πœ‹/2 And 
 πΌ2 = 4𝐼0 cos2 πœ‹/4 = 2𝐼0
  𝐼1:𝐼2 = 2 ∶ 1

Q2. Wave nature of light follows because
  •   Light rays travel in a straight line
  •   Light exhibits the phenomena of reflection and refraction
  •   Light exhibits the phenomena of interference
  •   Light causes the phenomena of photoelectric effect
Solution
Interference is explained by wave nature of light



Q3.   The angular width of the central maximum of the diffraction pattern in a single slit (of width ′π‘Ž′) experiment, with πœ† as the wavelength of light is
  •   3πœ†/2π‘Ž
  •   πœ†/2π‘Ž
  •   2πœ†/π‘Ž
  •   πœ†/π‘Ž
Solution
2πœ†/π‘Ž

Q4.  In Young’s double slit experiment, if monochromatic light is replaced by white light
  •   All bright fringes become white
  •   All bright fringes have colours between violet and red
  •   Only the central fringe is white, all other fringes are coloured
  •   No fringes are observed
Solution
In Young’s double slit experiment, if white light is used in place of monochromatic light, then the central fringe is white and some coloured fringes around the central fringe are formed 

Since 𝛽red > 𝛽violet etc., the bright fringe of violet colour forms first and that of the red forms later It may be noted that, the inner edge of the dark fringe is red, while the outer edge is violet. Similarly, the inner edge of the bright fringe is violet and the outer edge is red


Q5. In Young’s experiment, the distance between slits is 0.28 π‘šπ‘š and distance between slits and screen is 1.4 π‘š. Distance between central bright fringe and third bright fringe is 0.9 π‘π‘š. What is the wavelength of used light
  •   5000 β„«
  •   6000 β„«
  •   7000 β„«
  •   9000 β„«
Solution
  Position of 3π‘Ÿπ‘‘ bright fringe π‘₯3 = 3π·πœ†/𝑑 
⇒ πœ† = π‘₯3𝑑/3𝐷 = (0.9 × 10-2) × (0.28 × 10-3)/3 × 1.4 = 6000β„« .

Q6.  In a Young’s double slit experiment(slit distance d) monochromatic light of wavelength πœ† is used and the fringe pattern observed at a distance 𝐿 from the slits. The angular position of the bright fringes are
  •   sin-1 ( π‘›πœ†/𝑑 )
  •   sin−1 ( (𝑛 + 1/2 )πœ†/𝑑 )
  • sin-1 ( π‘›πœ†/L)
  •   sin-1 ( [(𝑛 + 1/2 )πœ†]/ 𝐿 )
Solution
For constructive interference Path difference ∆ = 𝑑 sinΞΈ = π‘›πœ† ⇒ πœƒ = sin-1[ π‘›πœ†/𝑑 ]


Q7. 𝑛 coherent source of intensity 𝐼0 are superimposed at a point, the intensity of the point is  

 
  •   𝑛𝐼0
  •   𝐼0/𝑛
  •   𝑛2𝐼0
  •   none of these
Solution
𝐼0/𝑛


Q8. When a compact disc is illuminated by small source of white light, coloured bands are observed. This is due to
  •   Dispersion
  • Diffraction
  •   Interference
  •   Reflection
The data which represents the music is stored on the compact disc in the form of very small pits arranged in a tightly wound spiral track in silvery surface. The distance between two neighbouring track is 1.6 micrometre. Which is only several times the wavelength of visible light, this small spacing is responsible for the wonderful colours reflected by a CD which works as a diffraction grating. Hence, diffraction is responsible for coloured bands.


Q9. . If Young’s double slit experiment, is performed in water

  •   The fringe width will decrease
  •   The fringe width will increase
  •   The fringe width will remain unchanged
  •   There will be no fringe
Solution
As we know
 Ξ² = 𝐷/𝑑 πœ† 
 Ξ» ∝1/ΞΌ 
 From Eqs. (i) and (ii), 
 Ξ² ∝ Ξ» ∝1/ΞΌ
 Ξ² ∝1/ΞΌ 
 The refractive index of water is greater than air, therefore fringe width will decrease

Q10.  For the constructive interference the path difference between the two interfering waves must be equal to  

 

  •   (2𝑛 + 1)πœ†
  •   2π‘›πœ‹
  •   π‘›πœ†
  •   (2𝑛 + 1)πœ†/2
Solution
Phase difference, 
 ∆Ο• = 2πœ‹/πœ† ∆π‘₯ 
 In a constructive interference,
 ∆Ο• = 2π‘›πœ‹
 Where 𝑛 = 0,1,2,3,…… 
 ∴ 2π‘›πœ‹ = 2πœ‹/πœ† ∆π‘₯ 
Or ∆π‘₯ = π‘›πœ†

Want to know more

Want to Know More
Please fill in the details below:

INNER POST ADS

Latest IITJEE Articles$type=three$c=3$author=hide$comment=hide$rm=hide$date=hide$snippet=hide

Latest NEET Articles$type=three$c=3$author=hide$comment=hide$rm=hide$date=hide$snippet=hide

Name

Admissions,1,Alternating Current,60,AP EAMCET 2020,1,Basic Maths,2,BCECE 2020,1,best books for iit jee,2,best coaching institute for iit,1,best coaching institute for iit jee preparation,1,best iit jee coaching delhi,1,best iit jee coaching in delhi,2,best study material for iit jee,4,BITSAT Registration 2020,1,Blog,62,books for jee preparation,1,books recommended by iit toppers,3,Capacitance,3,CBSE,1,CBSE accounts exam,1,CBSE boards,1,CBSE NEET,9,cbse neet 2019,3,CBSE NEET 2020,1,cbse neet nic,1,Centre of Mass,2,Chemistry,58,Class 12 Physics,15,coaching for jee advanced,1,coaching institute for iit jee,2,Collision,2,COMEDK UGET 2020 Application Form,1,COMEDK UGET 2020 Exam Form,1,COMEDK UGET news,1,CUCET 2020,2,Current Electricity,4,CVR college,1,Electromagnetic Induction,3,Electronics,1,Electrostatics,3,Energy,1,Fluid Mechanics,4,Gravitation,2,GUJCET 2020 Application Form,1,Heat,4,iit admission,1,iit advanced,1,iit coaching centre,3,iit coaching centre in delhi,2,iit coaching classes,2,iit coaching in delhi,1,iit coaching institute in delhi,1,iit entrance exam,1,iit entrance exam syllabus,2,iit exam pattern,2,iit jee,5,iit jee 2019,3,iit jee advanced,2,iit jee books,3,iit jee coaching,2,iit jee exam,3,iit jee exam 2019,1,iit jee exam pattern,3,iit jee institute,1,iit jee main 2019,2,iit jee mains,3,iit jee mains syllabus,2,iit jee material,1,iit jee online test,3,iit jee practice test,3,iit jee preparation,6,iit jee preparation in delhi,2,iit jee preparation time,1,iit jee preparation tips by toppers,2,iit jee question paper,1,iit jee study material,3,iit jee study materials,2,iit jee syllabus,2,iit jee syllabus 2019,2,iit jee test,3,iit preparation,2,iit preparation books,5,iit preparation time table,2,iit preparation tips,2,iit syllabus,2,iit test series,3,IITJEE,100,IPU CET,1,JEE Advanced,83,jee advanced exam,2,jee advanced exam pattern,1,jee advanced paper,1,JEE Books,1,JEE Coaching Delhi,3,jee exam,3,jee exam 2019,6,JEE Exam Pattern,2,jee exam pattern 2019,1,jee exam preparation,1,JEE Main,85,jee main 2019,4,JEE Main 2020,1,JEE Main 2020 Application Form,2,JEE Main 2020 news,2,JEE Main 2020 Official Answer Key,1,JEE Main 2020 Registration,1,JEE Main 2020 Score,1,JEE Main application form,1,jee main coaching,1,JEE Main eligibility criteria,3,jee main exam,1,jee main exam 2019,3,jee main online question paper,1,jee main online test,3,JEE Main Paper-2 Result,1,jee main registration,2,jee main syllabus,2,JEE mains 2020,1,jee mains question bank,1,jee mains test papers,3,JEE Mock Test,2,jee notes,1,jee past papers,1,JEE Preparation,2,jee preparation in delhi,1,jee preparation material,4,JEE Study Material,1,jee syllabus,6,JEE Syllabus Chemistry,1,JEE Syllabus Maths,1,JEE Syllabus Physics,1,jee test series,3,KCET - 2020,1,Kinematics,1,Latest article,5,Latest Articles,61,Latest News,34,latest news about neet exam,1,Laws of Motion,2,Magnetic Effect of Current,3,Magnetism,3,MHT CET 2020,2,MHT CET 2020 exam schedule,1,Modern Physics,1,NCERT Solutions,15,neet,3,neet 2019,1,neet 2019 eligibility criteria,1,neet 2019 exam date,2,neet 2019 test series,2,NEET 2020,2,NEET 2020 Application Form,1,NEET 2020 Eligibility Criteria,1,NEET 2020 Registration,1,neet application form,1,neet application form 2019 last date,1,Neet Biology Syllabus,1,Neet Books,3,neet eligibility criteria,3,neet exam 2019,7,neet exam application,1,neet exam date,1,neet exam details,1,neet exam pattern,6,neet exam pattern 2019,2,neet examination,1,neet mock test 2019,1,Neet Notes,3,Neet Online Application Form,3,neet online test,2,neet past papers,1,neet physics syllabus,1,neet practice test,2,NEET preparation books,1,neet qualification marks,1,NEET question paper 2019,1,neet question papers,1,neet registration,1,Neet Study Material,3,neet syllabus,6,neet syllabus 2019,5,NEET Syllabus 2020,1,neet syllabus chemistry,1,neet syllabus for biology,1,neet syllabus for physics,1,neet test series,1,neet ug 2019,2,news,5,online study material for iit jee,1,Optical Instruments,1,Physics,110,physics books for iit jee,1,Power,1,Practical Physics,1,Quiz,5,Ray Optics,1,Rotational Motion,3,SHM,3,Simple Harmonic Motion,3,study materials for iit jee,1,Study Notes,110,study notes for iit jee,1,Thermodynamics,4,TS EAMCET Notification,2,Units and Dimensions,1,UPSEE 2020,1,UPSEE 2020 Application Form,2,UPSEE EXAM,1,Vectors,2,VITEE Application form,1,Wave Motion,3,Wave Optics,1,WBJEE 2020 Admit Card,1,WBJEE 2020 Answer Key,1,Work,1,
ltr
item
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE: WAVE OPTICS AND INSTRUMENTS QUIZ 20
WAVE OPTICS AND INSTRUMENTS QUIZ 20
https://1.bp.blogspot.com/-dtM6lV5n51s/X65_JoqhB3I/AAAAAAAADsQ/gk0-PNjHh2cQ2CP2lc5danUbQ6U_IIuXQCLcBGAsYHQ/w486-h265/Quiz%2BImage%2B20%2B%252820%2529.png
https://1.bp.blogspot.com/-dtM6lV5n51s/X65_JoqhB3I/AAAAAAAADsQ/gk0-PNjHh2cQ2CP2lc5danUbQ6U_IIuXQCLcBGAsYHQ/s72-w486-c-h265/Quiz%2BImage%2B20%2B%252820%2529.png
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE
https://www.cleariitmedical.com/2020/11/wave-optics-and-instruments-quiz-20.html
https://www.cleariitmedical.com/
https://www.cleariitmedical.com/
https://www.cleariitmedical.com/2020/11/wave-optics-and-instruments-quiz-20.html
true
7783647550433378923
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy