SciencewithD

CBSE CLASS 12TH PHYSICS LATEST SAMPLE PAPER 2019-20 PHYSICS Time Allowed:3hr                                                                                           Max Marks: 70 General Instructions: All questions are compulsory. There are 37 questions in all. This question paper has four sections: Section A,Section B,Section C and Section D. Section A contains 20 questions of one mark, Section B consists of 7 questions of 2 marks , Section C consists of 7 questions of 3 marks , Sections D consists of 3 questions of five marks of each. Section A comprises of MCQs, Very Short Answer Questions.These questions are to be answered in one word,one sentence or as per the exact requirement of the question. There is no overall choice.However, an internal choice(s) has been provided in 4 questions of one marks , 3 questions of two marks,3 questions of three marks.You have to attempt only one of choices in such questions. Use of calculators are not permitted. You may ask for lo

CLASS 12TH ANNUAL PRACTICAL EXAMINATION DATE AND EXAMINATION CENTER CBSE Annual Practical Dates and Examination Center 2020 Last year CBSE conducted AISSE examination from 15 Feb to 4 April. In which 15 Feb to 1 March they had conducted vocational subjects examinations and main subjects examination in the month of March.Also accordingly Annual Practicals conducted from 15 Jan to 15 Feb. As we all know there are many subjects which consists of theory and practicals. Previously,Annual Practicals conducted in the same school which students belong , by external Examiner. But this year CBSE will conduct the Annual Practicals on the External Examination Center where the Theory paper conducted. According to the sources and tweets of CBSE this year Annual Practical will be held in the month of  December- January on the external examination centre. Note:- CBSE may make any change in this.

CBSE Class X Mathematics Paper Pattern  CBSE Class X Mathematics Paper Pattern  Paper pattern for both the level will remain same i e for Mathematics Standard and Mathematics Basic .Difficulty level of Mathematics Standard will be same as previous year but the Mathematics Basic paper will be easier than the Mathematics Standard Examination.Total 100 marks paper 80 marks board examination and 20 marks internal assessment. The number of question for both the paper will be same i e 40 question in 3 hours. 1 Breakage of 80 marks is given below : S NO Type of Questions Marks Per Question Number of Question Total Marks 1 Very short answer or Objective type 1 20 20 2 Short Answer I 2 6 12 3 Short Answer II 3 8 24 4 Long Answer  4 6 24 TOTAL 40 80 Internal Choice in Paper S NO Type of Questions Marks Per Question Number of Question No of Questions in Internal Choice  1 Very short answer or Objective type 1 20 6

CHANDRAYAAN 2 CHANDRAYAAN 2 Chandrayaan 2 is an Indian lunar mission , it is the world first mission to land on the SOUTH POLAR region of the moon.  The mission  Chandrayaan 2 was approved by Prime minister Dr Manmohan Singh 18 Sept, 2008. Chandrayaan 2 was launched on 22 July, 2019. GSLV Mk-III launcher was used for this mission, which is completely Indigenous. The Chandrayaan 2 mission is very important for India as it is first attempt to soft landing on the lunar surface.  India would become the first country to do soft landing on Moon's south polar region. And 4th ever country to do so. The success of this mission will also boost up the India first ever Maned Mission on Moon. Chandrayaan 2 will land on by soft landing on lunar south polar region on 2 Sept, 2019. Chandrayaan 2 has Lander -'Vikram' named after 'Dr Vikram A Sarabhai' the Father of Indian Space Programme and Rover - 'Pragyan' means 'Wisdom' in language Sanskrit

CLASS X MATHEMATICS  STANDARD OR  BASIC   WHICH ONE TO CHOOSE??? MATHEMATICS STANDARD VS MATHEMATICS BASIC Most of the CBSE class X students are confused about which one to choose in MATHEMATICS STANDARD  AND MATHEMATICS BASIC. Let us understand Two level examination for mathematics and than choose option accordingly: INTRODUCTION OF TWO LEVEL OF EXAMINATION IN MATHEMATICS 2020 This year CBSE has announced two levels of Examination in subject MATHEMATICS at AISSE 2020 in CLASS X .  TWO NAME OF THE EXAMINATION AS :  1 MATHEMATICS-STANDARD EXAMINATION  2 MATHEMATICS-BASIC EXAMINATION  1 MATHEMATICS-STANDARD EXAMINATION: Mathematics Standard will be same as the existing level of examination. Difficulty level will be same as previous year. 2 MATHEMATICS-BASIC EXAMINATION: Mathematics Basic will be the easier level of the examination than the Mathematics Standard. WHAT WOULD BE THE SYLLABUS FOR BOTH? Syllabus for both the level of examination remain same. Numbe

CBSE  PHYSICS PAPER CLASS 12th  JULY 2019 CBSE PHYSICS QUESTION PAPER JULY 2019 MM: 70                                                                                                                              Time: 3 Hr SECTION A (1 Marks Questions) Q 1. Define the angle of inclination at a given place due to earth’s magnetic  field. Q 2.  Name the most energetic electromagnetic radiation and write its  frequency range. OR Name the electromagnetic radiation used in eye surgery or to kill germs  in water purifiers. Write its frequency range. Q 3. Estimate the frequency associated with a photon of energy 2 eV.   OR  In photoelectric effect, does the photoelectric current depend on the  intensity of incident radiation ? Give reasons.   Q 4.  Which property of nuclear force explains the approximate constancy of  binding energy per nucleon with mass number A for nuclei in the range  30 < A < 170 ? Q 5.  Define the term ‘band width’ of message signals i

Traffic Light Signals When  We all have stuck in traffic jam,w e wonder how these light changes ? Does some person change the light watching the traffic or they automatically change?  Traffic lights is a set of automatic,coloured lights for controlling traffic. Traffic lights are signaling devices positioned at road intersection, pedestrian crossing , and other locations to control the flows of traffic. Traffic lights was initially designed for railway system. In 1830's the signal used for railway is  Red-Stop  ,  Green - Caution  and  White - Go . This system was not safe as white colour is not visible in night with stars at horizon or with white background  . In 1914 a  red lens  was fall from a signal and indicate  White-Go  result in a huge train tragedy. After that  white  colour is replaced by  Green  and  Green  by  Yellow  for caution. The world's first road traffic light was a manually operated gas lit signal installed outside House of Parliament London.