National Standard Examination in Astronomy (NSEA) 2015: A detailed analysis by Resonance

NSEA – 2015

A Detailed Analysis by Resonance

Introduction

On 22nd November 2015, NSEA (National Standard Examination in Astronomy) – 2015 exam was conducted by the Indian Association of Physics Teachers (IAPT) at many centers all over the country. NSEA is the stepping stage for selection of aspiring and talented students in the astronomy Olympiad Program. The student can move forward to other stages only after clearing this stage.

Eligibility: Only Indian citizens born on or after January 1, 1997 and are students studying in Class XII or lower as of November 30, 2015, can apply and appear for NSEA 2015 − 2016. The student has to himself re-assure his eligibility. At any stage if the student is found to be not eligible for the exam, he/she may be disqualified from the program.

Syllabus: The syllabus for National Standard Examination in Astronomy (NSEA) is almost similar as the curriculum of senior secondary level (Class XI and Class XII) of CBSE. However, only basic guideline for the course is mentioned. No detailed syllabus is given for NSEA. There is greater emphasis on physics and mathematics (calculus not asked) and elementary astronomy.

Question Paper: The medium of test was English only and it comprised of 80 objective type questions, each with only one of the four options correct with 3 marks each and -1 negative marking for incorrect answer.

Qualifying for the Second Stage: The basic objective of conducting this test is not focusing on merit but to involve as many students from the country to participate in the exam and try to show and expose their talent. Hence the selection to the stage II examinations i.e. Indian National Olympiad Examinations (INOs) is based on the following scheme.

  • Cutoff: To be eligible to get to the next level, i.e. the second stage, it is necessary that a student scores at-least a Minimum Admissible Score (MAS) which is 40% of the maximum score.
  • Proportional Representation Clause: The maximum number of students that can get to Stage II (INO) in each subject is around 300. These many students are not selected only on the merit basis but also on proportionate basis. This proportion is decided on the base of the number of candidates who appeared for NSE in the previous year from that center in each State or Union Territory (UT). In case there is a tie at the last position, then all the students competing for the last position will be eligible to move to stage II. However it’s necessary that the selected students fulfill the eligibility clause laid out above. The total number to be selected from centers in each State for each subject will be displayed on the IAPT and HBCSE website.
  • Minimum Representation Clause: Notwithstanding the proportional representation clause the number of students selected for INO from each State and UT must be at least one, provided that the eligibility clause is satisfied.
  • Merit Clause: As stated above, approximately 300 students are to be selected for second stage. If this does not happen according to MAS, then after selection as per merit, the shortfall from 300 students will be selected based purely on merit without further consideration to proportional representation and minimum representation clauses. In the event of a tie at the last position in the list all students with the same marks at this position will qualify to appear for the Stage II examination.

There will be no other criterion or provision for selection to the Indian National Olympiad Examinations (INOs). All students who qualify to appear for the INAO get a certificate of merit from IAPT.

Overall Marks Distribution

The paper pattern was same as last year. The paper had 80 questions each worth 3 marks. All questions were objective type with single correct option each carrying 1 negative mark for incorrect attempt. The subject wise breakup is as follows:

SUBJECT Class 11 Class 12 Total
No of Qs Total Marks No of Qs Total Marks No of Qs Total Marks
Astronomy 4 12 11 33 15 45
Mathematics 27 81 5 15 32 96
Physics 27 81 6 18 33 99
Grand Total 58 174 22 66 80 240

In this analysis we have rated every question on a scale of 1 to 3. The ratings are done by expert faculty of Resonance. The individual ratings are then averaged to calculate overall difficulty level.Overall Difficulty Level Analysis

  • 1: Easy
  • 2: Moderate
  • 3: Difficult

Subject Difficulty Level
Astronomy 1.53
Maths 1.72
Physics 1.57
Overall Average 1.62

 

Difficulty Level Analysis: No of Questions

Subject Easy Level Medium Level Difficult Level
No of Qs Total Marks No of Qs Total Marks No of Qs Total Marks
Astronomy 7 21 8 24 0 0
Mathematics 12 36 17 51 3 9
Difficult 18 54 11 33 4 12
Grand Total 37 111 36 108 7 21

Overall, it is felt by Resonance Faculty Team that paper was on tougher side compared to last year.
Resonance Experts feel that all subjects were of similar difficulty level, while Mathematics was on tougher side compared with Astronomy & Physics. While around 111 Marks can be considered easy overall, 108 marks are moderately difficulty and 21 marks are considered difficult by Resonance Team. 

Question Wise Difficulty Breakup

1.JPG

Marks Wise Difficulty Breakup

2.JPG

Subject Wise Analysis

Astronomy Analysis

Unit & Topic Name No of Questions Total Marks % Weightage
Astronomy 3 9 20.00%
Astronomy 3 9 20.00%
Circular Motion 1 3 6.67%
Circular Motion 1 3 6.67%
Gravitation 11 33 73.33%
Escape Velocity 3 9 20.00%
Gravitation 8 24 53.33%
Grand Total 15 45 100.00%

Maths Analysis

Unit & Topic Name No of Questions Total Marks % Weightage
Circle 1 3 3.13%
Position of two circles 1 3 3.13%
Coordinate 1 3 3.13%
General Conics 1 3 3.13%
Determinants 4 12 12.50%
Expansion of Determinants 4 12 12.50%
Differentiation 1 3 3.13%
Simple Differentiation 1 3 3.13%
Heat Transfer 1 3 3.13%
Conduction 1 3 3.13%
ITF 3 9 9.38%
Basic Identity 2 6 6.25%
Summation 1 3 3.13%
Mensuration 1 3 3.13%
Cube 1 3 3.13%
Number System 10 30 31.25%
Divisibility 3 9 9.38%
Logarithm 3 9 9.38%
Perfect square 1 3 3.13%
Remainder 2 6 6.25%
Sum of squares 1 3 3.13%
P & C 1 3 3.13%
Geometrical Problems 1 3 3.13%
Probability 1 3 3.13%
Fundamental 1 3 3.13%
Quadratic equation 1 3 3.13%
Relation between roots 1 3 3.13%
Sequence & series 1 3 3.13%
Method of Difference 1 3 3.13%
Statistics 1 3 3.13%
Variance 1 3 3.13%
Straight line 1 3 3.13%
Image of a point w.r.t a line 1 3 3.13%
Trigonometric Ratio 2 6 6.25%
Identities 1 3 3.13%
Multiple angle 1 3 3.13%
Trigonometry 1 3 3.13%
Trigonometric equation 1 3 3.13%
Vector 1 3 3.13%
Dot product 1 3 3.13%
Grand Total 32 96 100.00%

Physics Analysis

Unit & Topic Name No of Questions Total Marks % Weightage
Circular Motion 3 9 9.09%
Centripetal Force 2 6 6.06%
Radius of Curvature 1 3 3.03%
Elasticity & Viscosity 1 3 3.03%
Viscosity 1 3 3.03%
Electrostatics 1 3 3.03%
Coulomb’s Law 1 3 3.03%
Errors & Approximations 1 3 3.03%
Errors 1 3 3.03%
Fluid Mechanics 3 9 9.09%
Archimedes Principle 2 6 6.06%
Fluid 1 3 3.03%
Friction 2 6 6.06%
Friction 1 3 3.03%
Two block problem 1 3 3.03%
Geometrical Optics 2 6 6.06%
Combination of Lens & Mirror 1 3 3.03%
Power of Optical System 1 3 3.03%
Gravitation 1 3 3.03%
Acceleration due to Gravity 1 3 3.03%
Heat Transfer 2 6 6.06%
Calorimetry 1 3 3.03%
Heat Transfer 1 3 3.03%
Kinematics 2 6 6.06%
Rectilinear Motion 2 6 6.06%
Matrices 1 3 3.03%
System of Linear Equation 1 3 3.03%
Mechanics 1 3 3.03%
Work energy 1 3 3.03%
NLM 2 6 6.06%
NLM 2 6 6.06%
RBD 1 3 3.03%
Rotation about fixed axis 1 3 3.03%
RBD Rigid body Dynamics 1 3 3.03%
Angular Momentum 1 3 3.03%
Semiconductors 1 3 3.03%
Logic Gates 1 3 3.03%
Sound 1 3 3.03%
Air Column 1 3 3.03%
Sound waves 1 3 3.03%
Vibrations in open columns 1 3 3.03%
Thermodynamics 3 9 9.09%
Adiabatic Process 1 3 3.03%
Heat Engine 1 3 3.03%
Thermodynamics 1 3 3.03%
Units and Dimesnions 1 3 3.03%
Dimension 1 3 3.03%
Wave on a String 1 3 3.03%
Wave Equation 1 3 3.03%
Wave Optics 1 3 3.03%
Polarization 1 3 3.03%
Grand Total 33 99 100.00%

 

Expected Cutoff

To be eligible to get to the next level, i.e. the second stage, it is necessary that a student scores at-least a Minimum Admissible Score (MAS) which is 40% of the maximum score.

About Resonance

Resonance is India’s leading coaching Institute which offers Classroom Coaching Programs for preparation of JEE Advanced & JEE Mains. Institute registered 4124 selections in JEE Advanced 2015 (2570 from classroom and 1554 from distance learning). This feat is best in whole India from any Single Institute of Kota and Resonance repeated it consecutively for third year. Total 11 ranks from Classroom Courses are in Top 150. Earlier, total 11561 candidates from Resonance were declared qualified to appear for JEE Advanced 2015 after appearing in JEE Mains 2015.

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