Odisha D.El.Ed (CT) Mock Test Series - Booklet 3

State Council of Educational Research & Training, Odisha

D.El.Ed (CT) Entrance Examination

FULL-LENGTH MOCK TEST BOOKLET — 3

Booklet Code: B

Roll Number
Candidate Name
Signature

Time Allowed: 90 Minutes

Total Marks: 80 Marks

Negative Marking: -0.25 Marks

Syllabus Pattern: 100% Official Framework

Instructions to Candidates:

Write your Roll Number and Name in the spaces provided above immediately upon receiving this booklet.
This question paper contains exactly 80 Multiple Choice Questions (MCQs) distributed across two main sections:
- Section I (30 Marks): English (10), General Awareness (5), Reasoning (5), Teaching Aptitude (10).
- Section II (50 Marks): Odia (10), Mathematics (10), Social Science (10), Science (10), Odia Proficiency (10).
Each question is followed by four alternative options: A, B, C, and D. Select the most appropriate response.
Marking Scheme: +1.0 Mark will be awarded for every correct answer, and -0.25 Marks will be deducted for each incorrect answer. Unattempted questions will receive 0 marks.
Use the interactive digital OMR grid provided below or print this sheet to bubble your answers.

INTERACTIVE DIGITAL OMR SHEET

Practice bubbling digitally! Tap choices to practice and click "Evaluate Score" below to check results instantly.

SECTION I (30 Marks)

Part A: Language (English) — [10 Marks]

Q1. Choose the correct determiner: You must pay ______ attention to what your academic mentor recommends. [PYQ 2024]

A. much

B. many

C. few

D. a few

Q2. Select the correctly spelled word from the following options:

A. Maintenence

B. Maintenance

C. Maintanance

D. Mentenance

Q3. Identify the synonym of the word `PRUDENT`:

A. Wise

B. Reckless

C. Foolish

D. Careless

Q4. Change the voice: "They are constructing a new bridge over the Kathajodi river."

A. A new bridge was being constructed over the Kathajodi river.

B. A new bridge is being constructed over the Kathajodi river.

C. A new bridge over the Kathajodi river is constructed by them.

D. They constructed a new bridge over the Kathajodi river.

Q5. Fill in the blank with the correct preposition: The school principal congratulated the student ______ her outstanding victory. [PYQ 2023]

A. for

B. on

C. with

D. about

Q6. Choose the correct verb form: Neither the class teacher nor the students ______ completed the project yet.

A. has

B. have

C. is

D. are

Q7. What is the meaning of the idiom "A blessing in disguise"?

A. A sudden unexpected misfortune

B. Something good that is not recognized at first

C. A highly decorated religious event

D. A complete loss of resources

Q8. Choose the antonym of the word `AFFLUENT`:

A. Wealthy

B. Prosperous

C. Impoverished

D. Generous

Q9. Convert to indirect speech: She said to me, "Where are you going tomorrow?" [PYQ 2022]

A. She asked me where I was going the next day.

B. She asked me where was I going the next day.

C. She told me where I was going tomorrow.

D. She asked me where am I going tomorrow.

Q10. Find the error part: "One of the key reasons (A) / for his consistent failure (B) / are his complete laziness (C) / No error (D)"

A. A

B. B

C. C

D. D

Part B: General Awareness — [5 Marks]

Q11. Which historical educational scheme of India was launched during 1987-88 to provide minimum basic facilities to primary schools? [PYQ 2024]

A. Operation Blackboard

B. District Primary Education Programme (DPEP)

C. Sarva Shiksha Abhiyan (SSA)

D. Rashtriya Madhyamik Shiksha Abhiyan (RMSA)

Q12. On which exact date did the Directorate of Teacher Education and SCERT, Odisha come into existence as an independent Directorate?

A. October 2, 1979

B. January 15, 1990

C. August 15, 1964

D. April 1, 2010

Q13. Which is the highest mountain peak situated in the state of Odisha?

A. Mahendragiri

B. Deomali

C. Malayagiri

D. Gandhamardan

Q14. In which year was the 'National Programme of Nutritional Support to Primary Education' (commonly known as Mid-Day Meal Scheme) launched in India? [PYQ 2023]

A. 1991

B. 1995

C. 2001

D. 2009

Q15. Which of the following wildlife reserves in Odisha is designated as a Biosphere Reserve, a National Park, and a Tiger Reserve?

A. Bhitarkanika National Park

B. Similipal Biosphere Reserve

C. Satkosia Gorge Sanctuary

D. Chilika (Nalabana) Sanctuary

Part C: Reasoning Analysis — [5 Marks]

Q16. Find the missing term in the sequence: 2, 6, 12, 20, 30, ? [PYQ 2024]

A. 38

B. 40

C. 42

D. 46

Q17. If in a specific code language, `TEACHER` is coded as `VGCEJGT`, how will the word `STUDENT` be written?

A. UVWFGPV

B. UVWFGPC

C. UTWFGPC

D. UVWFGPU

Q18. A traveler starts walking and goes 8 km North, then turns right (East) and walks 6 km. How far is he from his starting point?

A. 14 km

B. 10 km

C. 12 km

D. 9 km

Q19. Pointing to a photograph of a boy, Suresh said, "He is the son of the only son of my mother." How is Suresh related to that boy?

A. Father

B. Uncle

C. Brother

D. Grandfather

Q20. Statements: I. All bags are tables. II. All tables are chalks. Conclusions: 1. Some chalks are bags. 2. All bags are chalks.

A. Only 1 follows

B. Only 2 follows

C. Both follow

D. Neither follows

Part D: Teaching Aptitude — [10 Marks]

Q21. According to Jean Piaget's stages of cognitive development, the Concrete Operational Stage corresponds to which age group? [PYQ 2023]

A. 0 to 2 years

B. 2 to 7 years

C. 7 to 11 years

D. 11 years and above

Q22. "Learning by Doing" as a core pedagogical principle forms the foundation of which school of philosophy?

A. Idealism

B. Naturalism

C. Pragmatism

D. Realism

Q23. The National Curriculum Framework for School Education (NCF-SE) 2023 has been designed to align with the core guidelines of which policy?

A. National Policy on Education 1986

B. Right to Education Act 2009

C. National Education Policy 2020

D. Programme of Action 1992

Q24. Micro-teaching is used in teacher-training institutions primarily to:

A. Help teachers master the subject content

B. Equip trainee teachers with specific teaching skills

C. Minimize class management stress

D. Test student academic performance

Q25. Which type of assessment is conducted at the end of an academic session or course to assign grades or certificates?

A. Formative Assessment

B. Summative Assessment

C. Diagnostic Assessment

D. Placement Assessment

Q26. The conceptual quotient formula for IQ (Intelligence Quotient) was originally proposed by which psychologist?

A. Alfred Binet

B. William Stern

C. Lewis Terman

D. David Wechsler

Q27. According to Piaget, when a child incorporates new environmental information into existing mental schemas, it is called: [PYQ 2022]

A. Accommodation

B. Assimilation

C. Equilibrium

D. Conservation

Q28. The concept of "Social Constructivism" in learning theory was proposed by which of the following educational psychologists?

A. Jean Piaget

B. Lev Vygotsky

C. Jerome Bruner

D. Albert Bandura

Q29. What does the term 'TLM' stand for in primary and elementary school teaching-learning processes?

A. Teacher Learning Method

B. Teaching Learning Material

C. Textbook Lesson Module

D. Total Learning Management

Q30. Which of the following is categorized as a learner-centered teaching method?

A. Lecture Method

B. Demonstration Method

C. Project-based Method

D. Textbook Recitation

SECTION II (50 Marks)

Part A: Language (Odia) — [10 Marks]

Q31. 'ଆବାହନ' ଶବ୍ଦର ସଠିକ୍ ବିପରୀତ ଶବ୍ଦଟି କ’ଣ? (Antonym of `Abahana'): [PYQ 2024]

A. ବିସର୍ଜନ (Bisarjana)

B. ପ୍ରାର୍ଥନା (Prarthana)

C. ଆହ୍ୱାନ (Ahwana)

D. ନିମନ୍ତ୍ରଣ (Nimantrana)

Q32. 'ପ୍ରତ୍ୟେକ'ର ସଠିକ୍ ସନ୍ଧି ବିଚ୍ଛେଦ ଚିହ୍ନଟ କର: (Sandhi split of `Pratyeka'):

A. ପ୍ରତ୍ୟ + ଏକ

B. ପ୍ରତି + ଏକ

C. ପ୍ରତ୍ + ଏକ

D. ପ୍ରତି + ଏକଃ

Q33. 'ବୁଢ଼ାଟି ବାଡ଼ି ସାହାଯ୍ୟରେ ଚାଲୁଛି' -- ଏଠାରେ 'ବାଡ଼ି ସାହାଯ୍ୟରେ' କେଉଁ କାରକ? (Case of `Badi Sahajyare'):

A. କର୍ତ୍ତା କାରକ (Nominative)

B. କର୍ମ କାରକ (Accusative)

C. କରଣ କାରକ (Instrumental)

D. ଅପାଦାନ କାରକ (Ablative)

Q34. 'ଅରଣ୍ୟ ରୋଦନ' ରୂଢ଼ିର ପ୍ରକୃତ ଅର୍ଥ କ’ଣ? (Idiom `Aranya Rodana'):

A. Crying inside a thick forest

B. ବୃଥା ପ୍ରାର୍ଥନା / ବୃଥା ଚେଷ୍ଟା (Useless effort)

C. To guard a dense forest

D. Crying out of heavy pain

Q35. 'ପଦ୍ମ'ର ଏକ ପ୍ରତିଶବ୍ଦ ବାଛ: (Synonym of `Padma'):

A. ଅରବିନ୍ଦ (Arabinda)

B. ଶଶାଙ୍କ (Shashanka)

C. ମୟୂଖ (Mayukha)

D. ଜଳଦ (Jalada)

Q36. ଶୁଦ୍ଧ ଶବ୍ଦଟି ଚିହ୍ନଟ କର: (Find the correct spelling of `Ujjwala'):

A. ଉଜ୍ୱଳ (Ujwala)

B. ଉଜ୍ଜ୍ୱଳ (Ujjwala)

C. ଉଜ୍ଜଳ (Ujjala)

D. ଉଜ୍ୱୋଳ (Ujwola)

Q37. 'ପ୍', 'ଫ୍', 'ବ୍', 'ଭ୍', 'ମ୍' ବର୍ଣ୍ଣଗୁଡ଼ିକର ଉଚ୍ଚାରଣ ସ୍ଥାନ କେଉଁଟି? (Pronunciation place): [PYQ 2023]

A. କଣ୍ଠ୍ୟ (Velar)

B. ତାଲବ୍ୟ (Palatal)

C. ଓଷ୍ଠ୍ୟ (Labial)

D. ଦନ୍ତ୍ୟ (Dental)

Q38. 'ଦାନ' ଶବ୍ଦଟି କେଉଁ କୃତ୍ ପ୍ରତ୍ୟୟ ଦ୍ୱାରା ଗଠିତ ହୋଇଛି? (Formation of `Dana'):

A. ଦା + ଅନ (Da + Ana)

B. ଦା + ନ (Da + Na)

C. ଦେ + ଅନ୍ୟ

D. ଦାନ୍ + ଅ

Q39. 'ଗାଈଟି ପଡ଼ିଆରେ ଚରୁଛି' -- ଏହି ବାକ୍ୟରେ 'ଗାଈଟି' କି ପ୍ରକାର ପଦ? (Parts of Speech):

A. ସର୍ବନାମ (Pronoun)

B. ବିଶେଷ୍ୟ (Noun)

C. ବିଶେଷଣ (Adjective)

D. କ୍ରିୟା (Verb)

Q40. 'ପଞ୍ଚବଟୀ' -- ଏହା କେଉଁ ସମାସର ଅନ୍ତର୍ଗତ? (Samasa type of `Panchabati'):

A. ଦ୍ଵିଗୁ (Dwigu)

B. ଅବ୍ୟୟୀଭାବ

C. ଦ୍ଵନ୍ଦ୍ଵ

D. ବହୁବ୍ରୀହି

Part B: Mathematics — [10 Marks]

Q41. Express the recurring decimal $0.5\overline{3}$ as a simplified rational fraction: [PYQ 2024]

A. 53/90

B. 8/15

C. 48/99

D. 53/99

Q42. By selling an article for Rs. 960, a shopkeeper loses 20%. At what price must he sell it to gain 10%?

A. Rs. 1200

B. Rs. 1320

C. Rs. 1100

D. Rs. 1080

Q43. A, B and C invest capital and share profits in the ratio 2:3:5. If the highest share is Rs. 1500, what is the total annual profit?

A. Rs. 3000

B. Rs. 2500

C. Rs. 3500

D. Rs. 2000

Q44. What is the difference between Simple Interest and Compound Interest on Rs. 4000 for 2 years at the rate of 10% per annum?

A. Rs. 40

B. Rs. 80

C. Rs. 20

D. Rs. 100

Q45. If one root of the quadratic equation $x^2 - p{x} + 8 = 0$ is 2, find the value of p:

A. 4

B. 6

C. 8

D. 10

Q46. If the radius of a cylinder is doubled while its height is halved, by how many times will its volume change?

A. Remains the same

B. Is doubled

C. Is quadrupled

D. Is halved

Q47. Find the LCM of the fractions: 2/3, 3/5, 4/7 [PYQ 2022]

A. 12

B. 1/105

C. 12/105

D. 6

Q48. The average height of 10 students is 150 cm. If two new students of heights 160 cm and 140 cm join, what is the new average height?

A. 152 cm

B. 150 cm

C. 151 cm

D. 148 cm

Q49. Simplify: $\sqrt{50} + \sqrt{18} - \sqrt{72}$

A. $2\sqrt{2}$

B. $3\sqrt{2}$

C. $4\sqrt{2}$

D. $5\sqrt{2}$

Q50. The interior angles of a triangle are in the ratio 2:3:5. What is the measure of the largest angle?

A. 70°

B. 90°

C. 100°

D. 80°

Part C: Social Science — [10 Marks]

Q51. Who was the legendary founder of the Brahmo Samaj in 1828? [PYQ 2023]

A. Swami Dayanand Saraswati

B. Raja Ram Mohan Roy

C. Ishwar Chandra Vidyasagar

D. Swami Vivekananda

Q52. Under which Article of the Constitution can the President of India declare a National Emergency?

A. Article 352

B. Article 356

C. Article 360

D. Article 368

Q53. The famous Hirakud Dam, one of the longest earthen dams in the world, is built across which river in Odisha?

A. Brahmani

B. Baitarani

C. Mahanadi

D. Subarnarekha

Q54. In which historical year did the famous Kalinga War take place under Emperor Ashoka?

A. 261 BC

B. 326 BC

C. 273 BC

D. 185 BC

Q55. Which of the following imaginary lines passes through the middle of India, dividing the country almost into two equal halves?

A. Equator

B. Tropic of Cancer

C. Tropic of Capricorn

D. Prime Meridian

Q56. How many Fundamental Duties are currently listed under Article 51A of the Indian Constitution? [PYQ 2024]

A. 10

B. 11

C. 12

D. 6

Q57. The famous Salt Satyagraha of 1930 at Inchudi in Odisha was led under the active direction of which freedom fighter?

A. Gopabandhu Das

B. Acharya Harihar

C. Madhusudan Das

D. Nabakrushna Choudhury

Q58. Which of the following soils is most suitable for cotton cultivation in India?

A. Alluvial Soil

B. Black Soil (Regur)

C. Red Soil

D. Laterite Soil

Q59. Who appoints the Governor of an Indian State?

A. The Prime Minister

B. The President of India

C. The Chief Justice of India

D. The Chief Minister of the State

Q60. Which state in India is the largest producer of Bauxite mineral ore?

A. Jharkhand

B. Chhattisgarh

C. Odisha

D. Maharashtra

Part D: General Science — [10 Marks]

Q61. Which of the following gases is commonly known as `Laughing Gas'? [PYQ 2024]

A. Carbon Monoxide

B. Nitrous Oxide

C. Sulphur Dioxide

D. Nitrogen Dioxide

Q62. What is the approximate escape velocity required for a body to escape the gravitational pull of the Earth?

A. 9.8 km/s

B. 11.2 km/s

C. 8.2 km/s

D. 15.0 km/s

Q63. Which cell organelle is widely referred to as the `Powerhouse of the Cell'?

A. Lysosome

B. Mitochondria

C. Ribosome

D. Golgi Apparatus

Q64. What is the primary chemical component of Biogas or Gobar Gas?

A. Methane

B. Butane

C. Propane

D. Ethane

Q65. A convex lens forms a virtual, erect, and magnified image when the object is placed: [PYQ 2023]

A. Beyond 2F

B. Between F and the Optical Center

C. Exactly at F

D. Between F and 2F

Q66. Which blood pigment is responsible for the red color of human blood cells?

A. Hemocyanin

B. Hemoglobin

C. Myoglobin

D. Chlorocruorin

Q67. What is the scientific chemical name of common table salt used in daily cooking?

A. Sodium Bicarbonate

B. Sodium Chloride

C. Calcium Carbonate

D. Potassium Hydroxide

Q68. The speed of sound travels fastest in which of the following states of matter?

A. Gases

B. Liquids

C. Solids

D. Vacuum

Q69. Scurvy (bleeding gums) is caused due to the severe deficiency of which vitamin?

A. Vitamin A

B. Vitamin B1

C. Vitamin C

D. Vitamin D

Q70. What is the standard threshold pH level below which rain is classified as Acid Rain?

A. Less than 5.6

B. Less than 7.0

C. More than 7.0

D. Exactly 6.5

Part E: Odia (Language Proficiency) — [10 Marks]

Q71. 'ଅନନ୍ତ' -- ଏହା କେଉଁ ସମାସର ଅନ୍ତର୍ଗତ? (Samasa of `Ananta'): [PYQ 2022]

A. ନଞ୍ଜ୍ ତତ୍‌ପୁରୁଷ

B. ନଞ୍ଜ୍ ବହୁବ୍ରୀହି

C. କର୍ମଧାରୟ

D. ଅବ୍ୟୟୀଭାବ

Q72. 'ସୂର୍ଯ୍ୟ' ଶବ୍ଦର ଏକ ସମାର୍ଥବୋଧକ ପ୍ରତିଶବ୍ଦ ଚିହ୍ନଟ କର: (Synonym of `Surya'):

A. ଆଦିତ୍ୟ (Aditya)

B. ଶଶାଙ୍କ (Shashanka)

C. ନିଶାକର

D. ଜଳଦ

Q73. 'ପ୍ରଭାତ ହେଲା, ପକ୍ଷୀମାନେ ମଧୁର ରାବିଲେ' -- ଏହା କି ପ୍ରକାର ବାକ୍ୟ? (Sentence type):

A. ସରଳ ବାକ୍ୟ (Simple)

B. ଯୌଗିକ ବାକ୍ୟ (Compound)

C. ଜଟିଳ ବାକ୍ୟ (Complex)

D. ମିଶ୍ର ବାକ୍ୟ

Q74. 'ତେଲିଆ ମୁଣ୍ଡରେ ତେଲ' -- ଏହି ଲୋକୋକ୍ତିର ପ୍ରକୃତ ଅର୍ଥ କ’ଣ? (Meaning of idiom):

A. Painting oil on dry hair

B. ସମର୍ଥ ବା ପ୍ରତିପତ୍ତିଶାଳୀ ଲୋକକୁ ସାହାଯ୍ୟ କରିବା (Helping the rich)

C. Pouring oil for absolute waste

D. Treating severe headache

Q75. ଓଡ଼ିଶାରେ 'ଉତ୍କଳ ସମ୍ମିଳନୀ'ର ମୁଖ୍ୟ ପ୍ରତିଷ୍ଠାତା କିଏ ଥିଲେ? (Founder of Utkal Sammilani):

A. ଗୋପବନ୍ଧୁ ଦାସ

B. ମଧୁସୂଦନ ଦାସ

C. ସାରଳା ଦେବୀ

D. ହରେକୃଷ୍ଣ ମହତାବ

Q76. ଶୁଦ୍ଧ ବନାନ ଶବ୍ଦଟି ଚିହ୍ନଟ କର: (Identify the correct spelling of `Ashirbada'): [PYQ 2023]

A. ଆଶିର୍ବାଦ

B. ଆଶୀର୍ବାଦ

C. ଆଶୀର୍ଵାଦ୍

D. ଆଶିର୍ଵାଦ୍

Q77. 'ଯିଏ ଶାସ୍ତ୍ର ଭଲ ଭାବରେ ଜାଣେ' -- ଏହାକୁ ଏକପଦୀକରଣ କଲେ କ’ଣ ହେବ? (One word substitution):

A. ଶାସ୍ତ୍ରଜ୍ଞ (Shastrajna)

B. ବିଦ୍ୱାନ

C. ପଣ୍ଡିତ

D. ଶାସ୍ତ୍ରବକ୍ତା

Q78. 'ରାମ ବନ୍ୟାବିପନ୍ନଙ୍କୁ ସାହାଯ୍ୟ କଲା' -- ଏଠାରେ 'ବନ୍ୟାବିପନ୍ନଙ୍କୁ' କେଉଁ କାରକ? (Case):

A. କର୍ମ କାରକ

B. ସମ୍ପ୍ରଦାନ କାରକ (Dative)

C. କରଣ କାରକ

D. ଅପାଦାନ କାରକ

Q79. 'ଦେଖୁଛି' କ୍ରିୟା ପଦରେ ଥିବା ମୂଳ ସଂସ୍କୃତ/ଓଡ଼ିଆ ଧାତୁଟି କ’ଣ? (Root verb):

A. ଦେଖ୍

B. ଦୃଶ୍ (Drush)

C. ଦର୍ଶନ

D. ଦେଖୁ

Q80. 'କପାଳ ଫାଟିବା' ରୂଢ଼ିର ପ୍ରକୃତ ଅର୍ଥଟି କ’ଣ? (Meaning of idiom `Kapala Fatiba'):

A. Having a physical head injury

B. ମନ୍ଦଭାଗ୍ୟ ହେବା / ସର୍ବନାଶ ହେବା (Bad luck)

C. Finding gold treasure

D. Getting highly successful

EXPLANATORY SOLUTIONS & REVISION HANDBOOK

Quick Check Keys:

Q1-10: 1.A | 2.B | 3.A | 4.B | 5.B | 6.B | 7.B | 8.C | 9.A | 10.C

Q11-20: 11.A | 12.B | 13.B | 14.B | 15.B | 16.C | 17.A | 18.B | 19.A | 20.C

Q21-30: 21.C | 22.C | 23.C | 24.B | 25.B | 26.B | 27.B | 28.B | 29.B | 30.C

Q31-40: 31.A | 32.B | 33.C | 34.B | 35.A | 36.B | 37.C | 38.A | 39.B | 40.A

Q41-50: 41.B | 42.B | 43.A | 44.A | 45.B | 46.B | 47.A | 48.B | 49.A | 50.B

Q51-60: 51.B | 52.A | 53.C | 54.A | 55.B | 56.B | 57.B | 58.B | 59.B | 60.C

Q61-70: 61.B | 62.B | 63.B | 64.A | 65.B | 66.B | 67.B | 68.C | 69.C | 70.A

Q71-80: 71.B | 72.A | 73.B | 74.B | 75.B | 76.B | 77.A | 78.B | 79.B | 80.B

Mathematical, Logical & Optics Explanations

Question 18: Path and Pythagoras Distance Vector Analysis

Correct Answer: B (10 km)

A traveler walks 8 km North, then turns right (East) and walks 6 km. The resulting movement maps a right-angled triangle. By Pythagoras Theorem:
Displacement² = Base² + Height² = 6² + 8² = 36 + 64 = 100
Displacement = √100 = 10 km

Question 20: Syllogism (Logical Boundary Mapping)

Correct Answer: C (Both follow)

Logical Breakdown:

Statement I (All bags are tables): The class of 'Bags' lies completely inside the class of 'Tables'.
Statement II (All tables are chalks): The class of 'Tables' lies completely inside the class of 'Chalks'.
Conclusion 1 (Some chalks are bags): Since Bags lie completely inside Chalks, they share an overlapping intersection. Valid.
Conclusion 2 (All bags are chalks): Since Bags are inside Tables, and Tables are inside Chalks, Bags must lie completely inside Chalks. Valid.

Question 41: Recurring Decimals to Fraction conversion

Correct Answer: B (8/15)

For converting mixed recurring decimals to fractions, apply this shortcut system:
Numerator = (Complete digits after decimal) - (Non-repeating digits) = $53 - 5 = 48$
Denominator = (One '9' for each repeating digit) followed by (One '0' for each non-repeating digit) = $90$
Fraction Form: $\frac{48}{90} = \frac{8}{15}$

Question 50: Triangle Interior Angles (Ratio Method)

Correct Answer: B (90°)

The sum of interior angles in a triangle is always $180^\circ$. Let the angles be $2x$, $3x$, and $5x$.
2x + 3x + 5x = 180° ⇒ 10x = 180° ⇒ x = 18° The largest angle is $5x = 5 \times 18^\circ = 90^\circ$. This forms a right-angled triangle.

Question 65: Optical Virtual Image Formation via Convex Lenses

Correct Answer: B (Between F and the Optical Center)

When an object is placed inside the focal length of a Convex Lens (between F and the optical center O), the refracted rays diverge on the opposite side. When projected backwards, they meet to form a virtual, erect, and magnified image on the same side as the object.

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Monday, 13 July 2026

Odisha CT Mock Test 3