Paper - I - BU 2021 Question Paper

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B.Sc. III^rd Year (Reg./Pvt.) Main Examination, 2021

Physics

Paper - I

[Maximum Marks: Reg. 40
Pvt. 50

नाष्ट - प्रत्येक खण्ड से पूछ गये प्रश्मा के अंकस्मान है । प्रत्येक खण्ड का उत्त्ता रनवी न पृष्ठ से प्रारम्भा करे
हल करें । उत्तरपुस्तिका की संख्या सपृम्पठन स्वतःअधि क न हा । विद्याधी द्वारा स्वयं की हस्तलिपिमे उत्तार
है । विद्याथी उत्तारपुस्तिका का प्रथम पृष्ठ से प्राप्त करें । ( प्रत्येकप्रसका उ
समान्य 50 शब् दा से अधिक नहा।)

Note :- All questions from each section carry equal marks. All questions are compulsory and answer limit are approximately
250 words. Start the answer of each section from new page. Maximum limit of pages of answer booklet are
approximately 16 pages. Answer should be written by the student in his/her own handwriting mandatory. The
first page of answersheet should be download by the student from university website is
mandatory.

Explain compton effect.

का म पट न प्रभाव का समझा इये ।

Explain motion of particle in a One dimensional potential well

एकविमी यविमयकू पमे कण की गति का समझा इये ।

What is the concept of electron spin. Explain it.

इलेक्ट्रॉन की चक्रण अभ्भिाधारणा क्य है ? समझा इये ।

Explain Isotope Effect.

समस्थथानिकप्रभ्ााव का समझा इये ।

Explain nuclear stability on the basis of Mass defect.

द्रव्यमान क्षति के आधार पर नाभिक के स्थायि व का समझा ये ।