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| Title Name | IGNOU PHE 9 Solved Assignment 2025 |
|---|---|
| Type | Soft Copy (E-Assignment) .pdf |
| University | IGNOU |
| Degree | BACHELOR DEGREE PROGRAMMES |
| Course Code | BSC |
| Course Name | Bachelor in Science |
| Subject Code | PHE 9 |
| Subject Name | Optics |
| Year | 2025 |
| Session | |
| Language | English Medium |
| Assignment Code | PHE-09/Assignmentt-1//2025 |
| Product Description | Assignment of BSC (Bachelor in Science) 2025. Latest PHE 09 2025 Solved Assignment Solutions |
| Last Date of IGNOU Assignment Submission | Last Date of Submission of IGNOU PHE-09 (BSC) 2025 Assignment is for January 2025 Session: 30th September, 2025 (for December 2025 Term End Exam).Semester WiseJanuary 2025 Session: 30th March, 2025 (for June 2025 Term End Exam).July 2025 Session: 30th September, 2025 (for December 2025 Term End Exam). |
Ques 1.
Write down Maxwell's field equations for free space and obtain expressions for velocity of electromagnetic waves.
Ques 2.
Discuss the significance of accommodation and convergence of human eye in respect of perception of light.
Ques 3.
Discuss, with necessary theory, how is interference pattern in Young's double slit experiment modified when a thin glass plate is introduced in the path of one of the interference waves?
Ques 4.
'Diffraction limits the image forming capability of optical devices'. Discuss the authenticity of this statement for the particular case of a microscope.
Ques 5.
Discuss the importance of hologram in (i) information storage, and (ii) pattern recognition.
Ques 6.
A plane e.m. wave is incident normally on an interface. Obtain expressions for reflection and transmission coefficients.
Ques 7.
Show that superposition of two linearly polarised light waves having different amplitudes and a finite phase difference can be used to produce elliptically plane polarised waves.
Ques 8.
How is image formed on the retina of human eye processed by human brain? Discuss.
Ques 9.
Discuss the principle of Michelson interferometer. How can it be used to determine the refractive index of a thin plate and wavelength of monochromatic light?
Ques 10.
Show that the radius of a dark Newton's ring is directly proportional to the square root of the radius of curvature of the lens used.
Ques 11.
The inclined faces of a glass biprism (µ = 1.5) make an angle of 1° with its base. The biprism is illuminated by a sodium lamp (2. = 589 nm) and the eye piece is at a distance of 1 m from the slit. A convex lens inserted between the biprism and the eye piece gives clear images of coherent sources in the focal plane of the eye piece. If the images are 0.4 cm apart in one case and 0.16 cm apart in the second case, calculate the width of interference fringes observed on the screen.
Ques 12.
A vertical single and double slits and illuminated by a point source. Discuss the salient features of their Fraunhofer diffraction patterns. Also, obtain an expression for intensity distribution in case of double slit.
Ques 13.
Discuss applications of lasers in medicine and communication.
Ques 14.
Define numerical aperture and angle of acceptance. An optical fiber has a numerical aperture of 0.20 and cladding refractive index of 1.59. Calculate the refractive index of the core material and the acceptance angle of the fibre in water whose refractive index is 1.33.
Ques 15.
Discuss lasing action of a He-Ne laser.
Ques 16.
निर्वात के लिए मैक्सवेल क्षेत्र समीकरण लिखें तथा विद्युत्-चुम्बकीय तरंगों के वेग का व्यंजक प्राप्त करें।
Ques 17.
मानविक नेत्रों की संमजन क्षमता तथा अभिसरण के महत्त्वों की प्रकाश अवगम के संदर्भ में विवेचना करें।
Ques 18.
यंग के द्वि-छिद्र व्यत्तिकरण चित्राम में किसी एक प्रकाश तरंग के पथ में एक पतली पारदर्शी पट्टिका रखने पर किस प्रकार परिवर्धन होता है? उपयुक्त सिद्धांत भी बतायें।
Ques 19.
"विवर्तन के कारण प्रकाशीय युक्ति की प्रतिबिम्ब बनाने की क्षमता सीमित हो जाती है"। इस कथन की सार्थकता की सूक्ष्मदर्शी के संदर्भ में चर्चा करें।
Ques 20.
होलाग्राम के महत्त्व का (i) सूचना संग्रह तथा (ii) पैटर्न अभिज्ञान के लिए व्याख्या करें।
Ques 21.
दो माध्यमों के अंतरपृष्ठ पर विद्युत चुम्बकीय तरंगें अभिलंबतः लागू होती हैं। परावर्तित एवं परागत गुणों का व्यंजक प्राप्त करें।
Ques 22.
सिद्ध कीजिए कि विभिन्न आयाम परंतु परिमित कलान्तर की दो रैखिकतः ध्रुवित प्रकाश तरंगों के अध्यारोपण से हमें दीर्घवृत्तीय ध्रुवित तरंगे प्राप्त होती हैं।
Ques 23.
समझाएं कि मानव नेत्र के रेटिना पर बने प्रतिबिंब को हमारा मस्तिष्क कैसे प्रक्रमित करता है?
Ques 24.
माइकेल्सन व्यतिकरणमापी की कार्य प्रणाली की चर्चा करें। इसे एक पतली प्लेट के अपवर्तनांक के निर्धारण के लिए किस प्रकार प्रयोग किया जाता है।
Ques 25.
सिद्ध करें कि न्यूटन के अदीप्त वलय की त्रिज्या समतली-उत्तल लेंस के वक्रता त्रिज्या के वर्गमूल के समानुपाती है I
Ques 26.
कांच के द्विक-प्रिज्म (µ = 1.5) के नत फलक आधार के साथ 1° का कोण बनाते हैं। द्विक-प्रिज्म को सोडियम लैम्प (λ= 589 nm) द्वारा प्रदीप्त किया जाता है तथा नेत्रिका रेखा छिद्र से 1m की दूरी पर है। नेत्रिका तथा द्विक प्रिज्म के बीच एक उत्तल लेंस रखने पर नेत्रिकी के फोकस समतल में कला संबद्ध स्रोत का प्रतिबिंब साफ-साफ दिखाई देता है। यदि प्रतिबिंब एक स्थिति में 0.4 cm की दूरी पर हो तथा दूसरी स्थिति में 0.16 cm दूर हो तो व्यतिकरण फ्रिन्जों की चौड़ाई परिकलित कीजिए।
Ques 27.
एक उर्ध्वाधर एकल रेखाछिद्र तथा द्वि-रेखा छिद्रों को बिन्दु स्रोत द्वारा प्रदीप्त किया गया है। इनके फ्राउनहोफर विवर्तन चित्रामों के मुख्य लक्षणों का उल्लेख कीजिए। द्वि-रेखा छिद्र के लिए तीव्रता वितरण का व्यंजक भी व्युत्पन्न करें।
Ques 28.
चिकित्सा एवं संचार में लेसरो के अनुप्रयोगों की चर्चा करें।
Ques 29.
संख्यात्मक द्वारक तथा स्वीकरण कोण परिभाषित करें। एक प्रकाशिक तंतु का संख्यात्मक द्वारक 0.20 तथा अधिपट्टन अपवर्तनांक 1.59 है। जल (µ 1.33) में तंतु के क्रोड अपवर्तनांक तथा = स्वीकरण कोण परिकलित कीजिए।
Ques 30.
लेबलित आलेख की सहायता से He-Ne लेसर में लेसरीकरण की व्याख्या कीजिए।
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| Course Name | Bachelor in Science |
| Course Code | BSC |
| Programm | BACHELOR DEGREE PROGRAMMES Courses |
| Language | English |
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