In the midst of the coronavirus epidemic and nationwide lockdown, the Ministry of Human Resource Development (MHRD) issued an alternate academic calendar of the National Council of Education Research and Training (NCERT) to ensure that the academic activities of the students continue. The ministry also urged the National Testing Agency (NTA) to change its academic calendar. After this, CBSE has decided to make it a little brief, changing the syllabus from 9th to 12th grade for the 2020-21 season.
As the CBSE syllabus has been slightly changed for classes 9-12 due to the school closure because of the Coronavirus lockdown, we got talking to a CBSE board examiner about the kind of changes seen in the Class 11-12 Physics syllabus for 2020-21.
CBSE Class 11 Physics syllabus changes for 2020-21
Theory:
No change in syllabus.
Practicals:
1. From the earlier requirement of at least 15 experiments (minimum of 6 from each section) in total, now 12 experiments need to be done (minimum of 6 from each section).
2. From the earlier requirement of at least 5 activities (minimum of 2 each from Section A and Section B), now 6 activities need to be done (minimum of 3 each from Section A and Section B).
3. In the evaluation scheme, ‘two experiments one from each section’ had the weightage of 8 + 8 marks. But now it has changed to a weightage of 7 + 7 marks.
4. In the evaluation scheme, ‘Practical record’ had a weightage of 6 marks. But now it has changed to a weightage of 5 marks.
5. One activity has been given in the CBSE Class 11 Physics Practical exam pattern for evaluation now. ‘One activity from any section’ having a weightage of 3 marks will be asked.
6. Activities were earlier supposed “to be demonstrated by teachers” as per the CBSE Physics syllabus. Now, activities have “to be performed by students.”
7. ‘For the purpose of understanding only’ section has been deleted after the heading Activities in Section A and Section B.
CBSE Class 12 Physics syllabus changes for 2020-21
Theory:
1. The number of periods of Unit 1 has been changed from 22 to 24. For Unit 2, the number of periods needed has been changed from 20 to 18.
2. The topic ‘Experimental study of photoelectric effect’ has been added to Chapter 11 (Dual nature of radiation and matter).
3. The topics Half life and Mean life have been added to Chapter 13 (Nuclei).
Practicals:
1. From the earlier requirement of at least 15 experiments (minimum of 6 from each section) in total, now 12 experiments need to be done (minimum of 6 from each section).
2. From the earlier requirement of at least 5 activities (minimum of 2 each from Section A and Section B), now 6 activities need to be done (minimum of 3 each from Section A and Section B).
3. In the evaluation scheme, ‘two experiments one from each section’ had the weightage of 8 + 8 marks. But now it has changed to a weightage of 7 + 7 marks.
4. In the evaluation scheme, ‘Practical record’ had the weightage of 6 marks. But now it has changed to a weightage of 5 marks.
5. One activity has been been given for the CBSE Class 12 Physics Practical evaluation now. ‘One activity from any section’ having a weightage of 3 marks will be asked.
6. Activities were earlier supposed “to be demonstrated by teachers” as per the CBSE Physics syllabus. Now, activities have “to be performed by students.”
7. There have been a few other changes in the CBSE Class 12 Physics Practicals – Experiments section.
Section-A (Experiments)
(a) The language of experiments 1 and 2 has been changed.
Experiment 1:
- Earlier: To determine resistance per of a given wire by plotting a graph for potential difference versus current.
- Now: To determine resistivity of two/three wires by plotting a graph for potential difference versus current.
Experiment 2:
- Earlier: To find resistance of a given wire using meter bridge and hence determine the resistivity (specific resistance) of its material.
- Now: To find resistance of a given wire/standard resistor using meter bridge.
(b) Earlier there were 10 experiments but now, only 8 experiments are there as Experiments 3 and 4, and 8 and 9 have been changed into or parts of each other.
- To verify the laws of combination (series) of resistances using a metre bridge. [OR]
- To verify the laws of combination (parallel) of resistances using a metre bridge.
- To convert the given galvanometer (of known resistance and figure of merit) into a voltmeter of desired range and to verify the same. [OR]
- To convert the given galvanometer (of known resistance and figure of merit) into an ammeter of desired range and to verify the same.
Section-B (Experiments)
(a) Experiment ‘To determine the wavelength of a laser beam by diffraction’ has been deleted.
(b) Earlier there were 10 experiments to do but now there are 9 experiments only.
(c) ‘For the purpose of understanding only’ has been deleted after the heading Activities in Section A and Section B.
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