Description

Previous Year Nios Question Paper with Answer Physics (312) Class Senior Secondary Exam Session March/April 2024

If you are here, Physics 312 Nios Exam Solved Question Paper April 2024 Class 12 . you have to grab it now for best exam practice & know the examination pattern for upcoming exam. Check Sample –

Physics

(312)

Time: 3 Hours]                                                                                                                                                   [ Maximum Marks: 80

Note:

(i) This question paper consists of 43 questions in all.

(ii) All questions are compulsory.

(iii) Marks are given against each question.

(iv) Use log tables if necessary.

(v) Section A consists of

(a) Q. No. 1 to 16 – Multiple choice type questions (MCQs) carrying 1 mark each. Select and write the most appropriate option out of the four options given in each of these questions.

(b) Q. No. 17 to 28 – Objective type questions carrying 2 marks each (with 2 sub-parts of 1 mark each). Attempt these questions as per the instructions given for each of the questions 17 to 28.

(vi) Section B consists of

(a) Q. No. 29 to 37 – Very short answer type questions carrying 2 marks each to be answered in the range of 30 to 50 words.

(b) Q. No. 38 to 41 – Short answer type questions carrying 3 marks each to be answered in the range of 50 to 80 words.

(c) Q. No. 42 and 43 – Long answer type questions carrying 5 marks each to be answered in the range of 80 to 120 words.

(1) Answers of all questions are to be given in the Answer-Book given to you. (2) 15 minutes time has been allotted to read this question paper. The question paper will be distributed at 2:15 p.m. From 2:15 p.m. to 2:30 p.m., the students will read the question paper only and will not write any answer on the Answer-Book during this period.

SECTION – A

1. Pressure due to a liquid column does not depend on

(A) its density                                                                    (B) its viscosity

(C) its height                                                                      (D) acceleration due to gravity at the place                                          1

Ans. (B) its viscosity

2. In the sky after rains, rainbow is formed due to the phenomenon of

(A) interference                                                               (B) diffraction

(C) polarization                                                               (D) dispersion                                                                                                    1

Ans. (D) dispersion

3. When a constant net external force acts on a body, which of the following physical quantities may not change? 1

(A) Position                                                                        (B) Speed

(C) Velocity                                                                         (D) Acceleration

Ans. (D) Acceleration

Or

A force F acts on a body of mass m for t seconds. The change in its linear momentum will be

(A) Ft                                                                                     (B) Fm

(C)                                                                                        (D)

Ans. (A) Ft

4. A body of mass m is thrown vertically upwards in air with an initial velocity v. Its kinetic energy at a height h will be

(A) equal to m                            (B) more than m

(C) less than m                            (D) mgh – m

Ans. (C) less than m

5. Which of the following phenomena is not exhibited by sound waves? 1

(A) Refraction                                                                                    (B) Diffraction

(C) Interference                                                                               (D) Polarization

Ans. (D) Polarization

6. Which of the following harmonics of its fundamental note is missing from the sounds produced by a closed pipe? 1

(A) Second harmonic                                                                      (B) Third harmonic

(C) Fifth harmonic                                                                            (D) Seventh harmonic

Ans. (A) Second harmonic

7. An electric field holds an oil drop (in air) having charge ne and mass m. The magnitude of is

(A) ne/(mg)                                                                                        (B) mg/(ne)

(C) nge/m                                                                                           (D) nmg/e                                                                                           1

Ans. (B) mg / (ne)

8. The SI unit of electric field is

(A) A                                                                                            (B)

(C) V                                                                                             (D) C                                                                                                               1

Ans. (C) V

OR

Two concentric spherical surfaces of radii r and 2r have a point charge q at their centre. The electric flux through these surfaces will be in the ratio

(A) 1 : 1                                                                                                 (B) 1 : 2

(C) 2 : 1                                                                                                 (D) 1 : 4

Ans. (A) 1 : 1

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