9394949438

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




RAY OPTICS AND OPTICAL INSTRUMENTS-12 Quiz

Dear Readers,

JEE Advanced Physics Syllabus can be referred by the IIT aspirants to get a detailed list of all topics that are important in cracking the entrance examination. JEE Advanced syllabus for Physics has been designed in such a way that it offers very practical and application-based learning to further make it easier for students to understand every concept or topic by correlating it with day-to-day experiences. In comparison to the other two subjects, the syllabus of JEE Advanced for physics is developed in such a way so as to test the deep understanding and application of concepts..

Q1. The table below shows object and image distances for four objects placed in front of mirrors. For which one is the image formed by a convex spherical mirror. [Positive and negative signs are used in accordance with standard sign convention
  •  -7.10 cm -18.0 cm
  •  -25.0 cm -16.7 cm
  •  -5.0 cm +1.0 cm
  •  -20.0 cm +5.71 cm
Solution

For (a) and (b), object and image are on the same side, so image is real as the object is real For (c), image is virtual but |m|>1. So concave mirror For (d), |m|less than 1 and image is also virtual, so in (d) image is formed in a convex mirror
Q2.The refractive index of a prism is 2. The prism can have a maximum refracting angle of
  •  90°
  •  60°
  •  45°
  •  90°
Solution

Critical angle θ_c=sin^(-1)⁡(1/μ) =sin^(-1)⁡(1/2)=30° If A>2θ_c, the ray does not emerge from the prism. So, maximum angle can be 60°

Q3.  A point source of light S is placed in front of a perfectly reflecting mirror as shown in the figure. ∑is a screen. The intensity at the centre of screen is found to be I If the mirror is removed, then the intensity at the center of screen would be  is placed in front of a perfectly reflecting mirror as shown in the figure. . The intensity at the centre of screen is found to be

  •   I
  •  10I/9
  •  9I/10
  •  2I
Solution

Let power of light source be P, then intensity at any point on the screen is due to light rays directly received from source and that due to light rays after reflection from the mirror I=P/(4πa^2 )+P/(4π×(3a)^2 )
When mirror is taken away,
I_1=P/(4πa^2 )=9I/10

Q4. 
The refracting angle of a prism is  and refractive index of the material of prism is . The angle of minimum deviation will be
  •  180°-3A
  •  180°+3A
  •  90°-3A
  •  180°-2A
Solution


From sin⁡((A+δ_m)/2)=μ sin⁡A/2 sin⁡((A+δ_m)/2)=cos⁡A/2/sin⁡A/2 ×sin⁡A/2
(A+δ_m)/2=π/2-A/2
δ_m=π-2A=180°-2A
Q5.A point object is kept in front of a plane mirror. The plane mirror is doing SHM of amplitude 2 cm. The plane mirror moves along the -axis which is normal to the mirror. The amplitude of the mirror is such that the object is always in front of the mirror. The amplitude of SHM of the image is
  •  0 cm
  •  2 cm
  •  4 cm
  •  1 cm
Solution


Q6. An eye specialist prescribes spectacles having a combination of convex lens of focal length  in contact with a concave lens of focal length . The power of this lens combination in dioptres is
  •  +1.5
  •  -1.5
  •  +6.67
  •  -6.67
Solution


Power of convex lens P_1=100/40=2.5 D
Power of concave lens P_2=-100/25=-4 D
Now P=P_1+P_2=2.5 D-4 D=-1.5 D
Q7. The lateral magnification of the lens with an object located at two different positions  and  are  and  respectively. Then the focal length of the lens is
  •  f=√(m_1 m_2 )(u_2-u_1)
  •  f=√(m_1 m_2 )(u_2-u_1)
  •  ((u_2-u_1))/√(m_2 m_1 )
  •  ((u_2-u_1))/((m_2 )^(-1)-(m_1 )^(-1) )
Solution

For lens 1/f=1/v_1 -1/u_1 u_1/f=u_1/v_1 -1 ⇒ m_1=v_1/u_1 =f/(u_1+f)
And m_2=f/(u_2+f)
1/m_2 -1/m_1 =((u_2-u_1))/f ⇒ f=((u_2-u_1))/((m_2 )^(-1)-(m_1 )^(-1) )
Q8. In a thick glass slab of thickness , and refractive index , a cuboidal cavity of thickness ‘ ’ is carved as shown in the fig and is filled with a liquid of R.I. . The ratio , so that shift produced by this slab is zero when an observer  observes an object  with paraxial rays is
  •  (n_1-n_2)/(n_2-1)
  •  T(n_1-n_2)/(n_2 (n_1-1))
  •  (n_1-n_2)/(n_1-1)
  •  (n_1-n_2)/(n_1 (n_2-1))
Solution

Shift =(l-m)(1-1/n_1 )+m(1-1/n_2 )=0
Q9.A ray of light enters a rectangular glass slab of refractive index  at an angle of incidence . It travels a distance of 5 cm inside the slab and emerges out of the slab. The perpendicular distance between the incident and the emergent rays is
  •  5√3 cm
  •  5/2 cm
  •  5 √(3/2) cm
  •  5 cm
Solution
Q10. 

A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 2/3. Their equivalent focal length is 30 cm. What are their individual focal lengths?

  •  -75, 50
  •  -10, 15
  •  75, 50
  • -15, 10
Solution

Let focal length of convex lens is +f then focal length of concave lens would be -3/2 f. From the given condition,
1/30=1/f-2/3f=1/3f
∴ f=10 cm
Therefore, focal length of convex lens = + 10 cm and that of concave lens = -15 cm.

author image

Written by: AUTHORNAME

AUTHORDESCRIPTION

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,Engineering & Medical,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: Ray Optics and Optical Instruments-Quiz-12
Ray Optics and Optical Instruments-Quiz-12
https://1.bp.blogspot.com/-41xb0zw7Tbc/YONHx-3p30I/AAAAAAAAL5w/qoFYloBHPaU8zryI_cqCwj2x0wxY-yDRQCLcBGAsYHQ/w640-h336/Quiz%2BImage%2B20%2B%25281%2529.jpg
https://1.bp.blogspot.com/-41xb0zw7Tbc/YONHx-3p30I/AAAAAAAAL5w/qoFYloBHPaU8zryI_cqCwj2x0wxY-yDRQCLcBGAsYHQ/s72-w640-c-h336/Quiz%2BImage%2B20%2B%25281%2529.jpg
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE
https://www.cleariitmedical.com/2021/07/ray-optics-and-optical-instruments-quiz_43.html
https://www.cleariitmedical.com/
https://www.cleariitmedical.com/
https://www.cleariitmedical.com/2021/07/ray-optics-and-optical-instruments-quiz_43.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