CBSE Class 9 Physics Question Paper Set D

CBSE Physics Question Paper for Class 9 CBSE exams for CBSE Students. Based on CBSE and CCE guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination. Please refer to more CBSE Class 9 question papers in other links. The CBSE Question papers are of past examinations. Its always recommended by CBSE to practice the papers released by CBSE to get better exams in CBSE exams. CBSE Last Year Question Papers for class IX for final/ term/ SA1/ SA2 Examinations conducted by Central Board of Secondary Education for all CBSE affiliated schools in India and abroad.

SUMMATIVE ASSESSMENT –I (2011)

SCIENCE -SC1 QP 470019

Class – IX (Physics)

General Instructions:

(i) The question paper comprises of two sections, A and B. You are to attempt both the sections.

(ii) All questions are compulsory.

(iii) There is no overall choice. However, internal choice has been provided in all the five questions of five marks category. Only one option in such questions is to be attempted.

(iv) All questions of section A and all questions of section B are to be attempted separately.

(v) Questions 1 to 3 in section A are one mark questions. These are to be answered in one word or in one sentence.

(vi) Questions 4 to 7 in section A are two marks questions. These are to be answered in about 30 words each.

(vii) Questions 8 to 19 in section A are three marks questions. These are to be answered in about 50 words each.

(viii) Questions 20 to 24 in section A are five marks questions. These are to be answered in about 70 words each.

(ix) Questions 25 to 42 in section B are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you.

Section - A

1. Apart from changing the magnitude of velocity of an object (or) changing the direction of motion of an object what other changes can force bring on an object ?

2. Mass of an object is 40 kg, what is its weight on the earth ? (Take g=10 m/s2) 10. A car travels from stop A to stop B with a speed of 30 km/h and then returns back to A with a speed of 50 km/h. Find :

    (i) Displacement of the car.

    (ii) Distance traveled by the car.

    (iii) Average speed of the car.

3. (a) State Newton’s first law of motion.

    (b) In the above experimental set-up, a student gives the card a sharp, fast horizontal flick with a finger.

    (i) What will happen to the coin ?

    (ii) State reason for your answer.

4. A ball is thrown vertically upwards with a velocity ‘u’. Calculate the velocity with which it falls to the earth again.

5. Look at the diagram above and answer the following questions :

    (a) When a force is applied through the free end of the spring balance A, the reading on the spring balance A is 15 gwt. What will be the reading of spring balance B ?

    (b) Write reasons for your answer.

    (c) Name the force which balance A exerts on balance B and the force of balance B on balance A.

6. (a) Define acceleration due to gravity.

    (b) A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground. (take g = 9.8 m/s2 )

7. (a) State Newton’s Third Law of Motion. Illustrate it with one example.

    (b) A revolver of mass 500 g, fires a bullet of mass 10 g with a speed of 100 m/s. Find :

    (i) Momentum of the bullet

    (ii) Initial momentum of ‘revolver and bullet’ as a system

    (iii) Recoil velocity of the revolver

8. An object starts linear motion with a velocity ‘u’ and under uniform acceleration ‘a’ it acquires a velocity ‘v’ in time ‘t’. Draw its velocity time graph. From this graph obtain the following equations.

(a) v=u+at

(b) s=ut+½at²

Please refer to attached file for CBSE Class 9 Physics Question Paper SA1 2011 (4)