UP Board 2018: Class 12th Physics(I) Guess Paper Solved

Jan 23, 2018, 17:21 IST

UP Board Solved Guess Paper for Class 12 Physics First board exam 2018 is available here. This paper is based on latest examination pattern and marking scheme. This solved paper is very helpful for the preparation of UP Board Class 12 Physics first board exam 2018.

Class 12th Physics First Solved Guess Paper
Class 12th Physics First Solved Guess Paper

Solved Guess Paper for Class 12 UP Board exam 2018 is available here. With this guess paper, students can easily understand the latest UP Board Class 12 Physics first paper examination pattern & marking scheme.

UP Board Class 12 Physics first board exam 2018 is scheduled to be held on 15 February. UP Board Class 12 Physics syllabus is vast. Hence, the selective study in this subject plays a very important role. Due to this reason, we have provided a completely solved UP Board class 12 Physics first solved guess paper for 2018 board exam.

This paper has been developed by subject experts after the brief analysis of previous 5 years’ papers. After going through previous year papers, our subject experts have observed that questions based on some important concepts of Class 12 Physics first syllabus are frequently asked in board exams, every year. The paper contains all such important concepts.

Salient features of this Solved Guess Paper are:

• Strictly follows latest UP Board Class 12th Physics First syllabus

• Based on latest examination pattern

• Focuses upon topics from which questions are likely to be asked

• Offers detailed solutions for each and every question

• Perfect for practice & revision

UP Board exam 2018: Syllabus, Exam pattern, Chapter notes, Mock papers and Previous year papers

Some questions from the solved guess paper are given below:

प्रश्न: जड़त्व आघूर्ण तथा कोणीय त्वरण के गुणनफल को कहते हैं –

(i)       कोणीय संवेग

(ii)      बल आघूर्ण

(iii)      बल

(iv)      कार्य

उत्तर : बल आघूर्ण 

प्रश्न: किसी प्रत्यावर्ती परिपथ में शक्ति गुणांक अधिकतम होता है जब परिपथ

(i)  केवल प्रेरकीय हो

(ii)  केवल धारितात्मक हो

(iii) प्रेरकीय एवं धारितात्मक हो

(iv) केवल प्रतिरोध युक्त हो

उत्तर: (घ) (iii)  प्रेरकीय एवं धारितात्मक हो

प्रश्न: घर्षण तथा सीमांत घर्षण से क्या समझते है? सीमान्त घर्षण के नियम लिखिए|

उत्तर: घर्षण: घर्षण वह प्रतिरोधी बल है जो किसी दो ठोस सतहों जो एक दुसरे के संपर्क में हों, के बीच परिपेक्ष्य गती (relative motion) का हमेशा विरोध करता है|

How to manage the stress of a bad exam and prepare better for the next exam?

सीमान्त घर्षण: संपर्क में स्थित दो ठोस सतहों में से किसी एक पर जब कोई बाह्य बल आरोपित किया जाता है तो यदि बल की मात्रा कम हो तो सतहों के बीच गति आरंभ नहीं होती है| लेकिन यदि बाह्य बल की मात्रा धीरे-धीरे बढ़ जाए तो बल के एक नियम मान के लिए सतहों में आपेक्षित गति आरंभ होने की स्थिति आ जाती है| इस स्थिति में सतहों के बीच कार्यरत घुर्षण को सीमान्त घर्षण की अधिकतम मान होती है|

सीमान्त-घर्षण के नियम:

(i) सीमान्त घर्षण संपर्क के सतहों के प्रकृति पर निर्भर करता है|

(ii) सीमान्त घर्षण संपर्क में सतहों के क्षेत्रफल पर निर्भर नहीं करता है|

प्रश्न: कृष्णिका विकिरण की परिभाषा बताएं?

उत्तर:  भौतिक विज्ञान में कृष्णिका पदार्थ की एक आदर्शीकृत अवस्था है, जो अपने ऊपर पड़ने वाले सभी विद्युत  चुम्बकीय विकिरण अवशोषित कर लेता है। कृष्णिका एक विशेष और सतत वर्णक्रम (स्पेक्ट्रम) में विकिरण को अवशोषित और गर्म होने पर फिर से उत्सर्जित ‍करते हैं। क्योंकि कोई भी प्रकाश (दृश्य विद्युत चुम्बकीय विकिरण) परिलक्षित या संचरित नहीं होता है और वस्तु जब ठंडी होती है, तो काली दिखाई देती है। हालांकि एक कृष्णिका तापमान पर निर्भर प्रकाश वर्णक्रम का उत्सर्जन करता है। कृष्णिका से निकले इस सौर विकिरण को कृष्णिका विकिरण कहा जाता है।

Each and every question of Physics first guess paper has been provided with a detailed explanations which will help students to understand what & how much they must write in UP Board  class 12th board exam to score maximum marks. To take maximum benefits from this paper, students should put an honest effort to solve the paper and cross check their answers with the solutions provided with this guess paper.

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