CBSE Class 11 Physics Solved Sample Paper 2019
Check the CBSE Class 11 Physics Sample Paper for annual exams 2019. Students can check their preparedness by solving the sample paper. Students can also check the detailed solutions if they face any difficulty while attempting paper. Physics is one of the toughest subjects for CBSE Class 11 students as direct questions are not asked from this subject. But, students can score very good marks if they try to understand the concept instead of rote learning. This sample paper is based on the latest CBSE Class 11 Syllabus. The paper pattern exactly matches the CBSE Sample Papers.
Some salient features of the CBSE Class 11 Physics Sample Paper, are:
1. Based on the latest CBSE Class 11 Syllabus.
2. Questions are included from each and every chapter.
3. The paper design is exactly similar to CBSE Class 11 Question Paper.
4. Detail solution for all the questions.
1. All the questions are compulsory.
2. The questions paper consists of 27 questions divided into 4 sections A, B, C and D.
3. Section A comprises of 5 questions of 1 mark each. Section B comprises of 7 questions of 2 marks each. Section C comprises of 12 questions of 3 marks each. Section D comprises of 3 questions of 5 marks each.
4. There is no overall choice. However, there is an internal choice in one question of 2 marks weightage, one question of 3 marks weightage and all the three questions of 5 marks weightage.
5. Use of calculators is not permitted.
Some sample questions from CBSE Class 11 Physics Solved Sample Paper 2019 are given below:
State the number of significant figures 0.000040027 m2.
The number of significant figures in 0.000040027 m2 is 5.
If the number is less than one, then the zeroes on the right of the decimal point (but left to the first non-zero) are insignificant. Hence, all four zeroes appearing before 4 are not significant figure. All zero between two non-zero digit are always significant. Hence, the remaining five digits are significant figures.
What are vector quantities? Give some examples.
A vector quantity is specified by its magnitude as well as the direction associated with it. Examples are acceleration, velocity, displacement, and angular velocity.
Does short-sightedness (myopia) or long-sightedness (hypermetropia) imply necessarily that the eye has partially lost its ability of accommodation? If not, what might cause these defects of vision?
No, a myopic or hypermetropic person may have normal ability of accommodation of the eye lens. The partial loss of ability of accommodation of eye lens is called presbyopia. It can be corrected in the way hypermetropia is dealt with.
What are laws of limiting friction?
The laws of limiting friction are as follows:
(i) The magnitude of the force of limiting friction (F) between any two bodies in contact is directly proportional to the normal reaction (R) between them i.e. F R.
(ii) The direction of the force of limiting friction is always opposite to the direction in which one body is at the verge of moving over the other.
(iii) The force of limiting friction is independent of the apparent area of contact, as long as the normal reaction between the two bodies in contact remains same.
(iv) The force of limiting friction between any two bodies in contact depends on the nature of material of the surfaces in contact and their roughness or smoothness.
What are conservative and non-conservative forces? Give examples?
Conservative forces: A force is said to be conservative if work done by or against the force in moving a body depends on the initial and final positions of the body and not on the nature of the path followed between the initial and final positions. This means, work done by or against a conservative force in moving body over any path between fixed initial and final position will be the same.
Example: Gravitational force, electrostatic force.
Non-conservative force: A force is said to be non-conservative, if work done by or against the force in moving a body from one position to another, depends on the path followed between these two positions.
Example: Frictional force
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