## ICSE Class 9 Physics Sample Question Paper 10 with Answers

ICSE Class 9 Physics Sample Question Paper 10 with Answers Section -1 (Attempt all questions from this section) Question 1. (a) The size of a particle is 5.2 p. Express it in metre. (b) State the numerical value of the frequency of oscillation of a second’s pendulum. Does it depend on the amplitude of oscillation ? (c) In an instrument, there are 25 divisions on the vernier scale which have length of 24 divisions of the main scale. 1 cm on main scale is divided into 20 equal parts. Find the least count. (d) What are fundamental quantities ? Give examples. (e) A pendulum makes 80 oscillations in 20 s. Find its frequency and time period. Answer: (a) Given: Size of particle = 5.2 μ Since 1μ =10-1 m ∴ Size of particle = 5.2 x 10-6 m. (b) The frequency of oscillation of a second’s pendulum is 0.5 s. No, it does not depend on the amplitude of oscillation. (c) The value of one main scale division, x = cm The number of divisions on vernier scale, n = 25 ∴ Least count of vernier scale = (d) Fundamental quantities are those quantities which do not depend upon other…

## ICSE Class 9 Physics Sample Question Paper 9 with Answers

ICSE Class 9 Physics Sample Question Paper 9 with Answers Section -1 (Attempt all questions from this section) Question 1. (a) Name four fundamental quantities. (b) Name the instrument which has the least count: (i) 0.1 mm, (ii) 0.01 mm. (c) Two simple pendulums A and B have equal length, but their bobs weigh 150 gf and 200 gf respectively. What would be the ratio of their time periods ? Give reason for your answer. (d) Two simple pendulums P and Q have length 4 m and 9 m respectively at a certain place. Which pendulum will have more oscillations in 1 minute ? Explain your answer. (e) If time periods of two pendulums are in the ratio of 3 : 5, find the ratio of their lengths. Answer: 1. (a) Length, mass, time and temperature are examples of fundamental quantities. (b) (i) Vernier callipers (ii) Screw gauge. (c) The ratio of the time periods of pendulums A and B is 1 : 1. This is because time period does not depend on the weight of the bob. (d) Since time period is directly proportional to the square root of effective length, the time periods of P and Q are…

## ICSE Class 9 Physics Sample Question Paper 8 with Answers

ICSE Class 9 Physics Sample Question Paper 8 with Answers Section -1 (Attempt all questions from this section) Question 1. (a) The bob of a simple pendulum is made of wood. What will be the effect on the time period if an identical bob of aluminium replaces the wooden bob ? (b) (i) The linear distance moved by the screw, when it is given one complete rotaion is equal to the distance between two consecutive threads, as measured along the axis of the screw. This distance is called ………………….. the of the screw. (ii) The least count of a screw is defined as the distance moved by the screw on the main scale when the screw is given ………………….. complete revolution/s. (c) What happens when you shake a wet piece of cloth ? Explain your observation. (d) A bag of sugar weighs ‘W’ at some place on the equator. If this bag is taken to the poles, will it weigh the same, more or less ? Give a reason for your answer. (e) A body of mass 500 g is at rest on a frictionless surface. Calculate the distance travelled by it in 10 s when acted upon by a…

## ICSE Class 9 Physics Sample Question Paper 7 with Answers

ICSE Class 9 Physics Sample Question Paper 7 with Answers Section -1 (Attempt all questions from this section) Question 1. (a) The bob of a simple pendulum is hollow with a pinhole at its lower end. It is filled with water and allowed to oscillate. How does its time period vary with time ? (b) Fill in the blanks : (i) Length of a simple pendulum is the distance between the point of………………………….. and the point of oscillation. (ii) A second’s pendulum is one, whose time period is………………………………. second (s). (c) A boy running a race accelerates at 2.5 ms-2 for the first 4 s of the race. How far does he travel in this time (d) Explain why some of the leaves may fall from a tree, if we vigorously shake its branch. (e) When dropped from the same height, a body reaches the ground quicker at the poles than at the equator. Why ? Answer: (i) As the water drips away from the pinhole, the centre of gravity of the pendulum gets lowered. This increases the effective length of the simple pendulum. Since the time period of a pendulum depends directly on its length, there is an increase…

## ICSE Class 9 Physics Sample Question Paper 6 with Answers

ICSE Class 9 Physics Sample Question Paper 6 with Answers Section -1 (Attempt all questions from this section) Question 1. (a) A screw gauge has pitch of 1.0 mm and 200 divisions on the circular scale. Will it be possible to increase the accuracy of the gauge arbitrarily by increasing the number of divisions on the circular scale ? (b) Fill in the blanks : (i) Zero error is positive when the zero of vernier scale lies to the of the zero of the main scale, when the two jaws of the vernier are in contact. (ii) Zero error is negative when the zero of vernier scale lies to the of the zero of the main scale, when the two jaws of the vernier are in contact. (c) Can a body have constant speed and still be accelerating ? (d) Two similar vehicles are moving with same velocity on the road, such that one of them is loaded and the other is empty. Which of the two vehicles will require larger force to stop ? (e) If the earth attracts an apple, does the apple also attract the earth ? If so, why does the earth not move towards the…

## ICSE Class 9 Physics Sample Question Paper 5 with Answers

ICSE Class 9 Physics Sample Question Paper 5 with Answers Section-1 (Attempt all questions from this section) Question 1. (a) How will you express the result of a measurement of a physical quantity ? (b) What do you mean by the following terms : (i) Least count of an instrument (ii) Vernier constant ? (c) State the parameters on which time period of a simple pendulum does not depend. (d) A vernier scale has 50 divisions which coincide with 49 divisions of the main scale. The main scale is graduated in 1/2 mm steps. What is the least count of the vernier ? (e) Calculate the length of a second’s pendulum at a place where acceleration due to gravity is 9.8 m/s2. Answer: (a) Result of a measurement of a physical quantity is expressed by a number of numerical measure accompanied by a unit. Thus, measurement of a physical quantity (Q) = Numerical measure (n) x unit (μ) (b) (i) Least count of an instrument means the least or smallest measurement which can be measured by the instrument accurately. (ii) Vernier constant is equal to the difference between the values of one main scale division and one vernier scale division.…

## ICSE Class 9 Physics Sample Question Paper 4 with Answers

ICSE Class 9 Physics Sample Question Paper 4 with Answers Section-1 (Attempt all questions from this section) Question 1. (a) What do you understand by (i) amplitude and (ii) frequency of oscillation of a simple pendulum ? (b) Draw a graph of l, the length of a simple pendulum, against T2, the square of its time period. (c) Is a month equal to a lunar month ? Give reason. (f) The iron bob of a given pendulum is replaced by a lead one of the same radius. Lead is known to be denser than iron. What would be the effect of this change on the pendulum’s time period ? (g) An astronaut carries a second’s pendulum to the moon where the gravity is only 1/9th of that of the earth. What will be the time period of the pendulum there ? Answer: (a) (i) The amplitude of a simple pendulum is the maximum displacement of its bob from its equilibrium or mean position. (ii) The frequency of oscillation of simple pendulum equals the number of complete oscillation made by it in one second. (b) The required graph is a straight line, e., T2 α l. (c) No, the month is…

## ICSE Class 9 Physics Sample Question Paper 2 with Answers

ICSE Class 9 Physics Sample Question Paper 2 with Answers Section -1 (Attempt all questions from this section) Question 1. (a) Define the light year. Express it in metre. (b) A student measures the length of a line with a (ordinary) meter scale and quotes his result as 15.78 cm. Is this result acceptable? (c) Name the two factors on which the time period of a simple pendulum depends. (d) Fill in the blanks : (i) The S.I. unit of pressure is ………………….. (ii) The backlash error can be there in a ………………….. (e) The time periods of two simple pendulums are in the ratio 2:1. What will be the corresponding ratio of their lengths? Answer: (a) A light year is defined as the distance travelled by light, in vacuum, in a time span of one 1 light year = 9.46 x 1015 m (b) No. the meter scale can measure lengths only up to 0.1 cm, i.e., only up to the first decimal place. Hence, he is not justified in quoting his result up to the second decimal place. (c) The time period of a simple pendulum depends upon (1) its effective length (l), and (2) the acceleration due…

## ICSE Class 9 Physics Sample Question Paper 1 with Answers

ICSE Class 9 Physics Sample Question Paper 1 with Answers [Max Marks : 80 [2 Hours] General Instructions Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this Paper is the time allowed for writing the answers. Section I is compulsory. Attempt any four questions from Section II. The intended marks for questions or parts of questions are given in brackets [ ]. Section – I (Attempt all questions from this section) [40 Marks] Question 1. (a) (i) Define the least count of an instrument.  (ii) What is the Least count of a standard laboratory micrometer screw gauge? (b) A spring balance is used to find the weight of a body X on the surface of the moon. The mass of the body X is 2 kg and its weight is recorded as 3.4 N. The weight of another body Y recorded by the same balance is found to be 7.65 N. Calculate the mass of the body Y.  (c) State two differences between mass…

## ICSE Class 9 English Language Sample Question Paper 3 with Answers

ICSE Class 9 English Language Sample Question Paper 3 with Answers Question 1. Write a composition (300 – 350 words) on any one of the following : (a) Write an original short story titled “The Door of Dreams”. (b) Describe what you might see or hear in your town early in the morning. (c) Your class went on a visit to a steel factory for an educational visit. Write a narrative essay about the visit. (d) Too much money is a bad thing.’ Write an essay arguing for or against the topic. (e) Study the picture given below. Write a short story or a description or an account of what it suggests to you. Your composition may be about the subject of the picture or you may take suggestions from it; however, there must be a clear connection between the picture and your composition. Answer: The Door of Dreams (a) Days were sultry, leaves dry with dust covering them and roads emanating heat beyond the bearing capacity. Sitting in my hostel room with nothing much to do, I was getting uncomfortable and began to leaf through a book that might take my thoughts off the heat. Hardly had it been…

## ICSE Class 9 English Language Sample Question Paper 2 with Answers

ICSE Class 9 English Language Sample Question Paper 2 with Answers Question 1. Write a composition (300 – 350 words) on any one of the following : (a) Write an original story titled, ‘All is well that ends well (b) You have been to your favourite place during the holidays. Write an essay describing the sights and persuade others to visit the same place. (c) You are on your way back home from school and it suddenly thunders and starts pouring. Write a narrative essay on the topic. (d) Express your views either for or against the statement. “Grades do not measure how smart you are”. (e) Study the picture given below. Write a short story or a description or an account of what it suggests to you. Your composition may be about the subject of the picture or you may take suggestions from it; however, there must be a clear connection between the picture Answer: All is Well that Ends Well (a) It was my sixteenth birthday and my dad was supposed to come from sailing. He works in the merchant navy and he promised he would make it for my birthday. My mother was planning a big-birthday bash…

## ICSE Class 9 English Language Sample Question Paper 1 with Answers

ICSE Class 9 English Language Sample Question Paper 1 with Answers [Max Marks : 80 [2 Hours] General Instructions Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this Paper is the time allowed for writing the answers. Attempt all five questions. The intended marks for questions or parts of questions are given in brackets [ ]. You are advised to spend not more than 30 minutes in answering Question 1 and 20 minutes in answering Question 2. For Email and Notice Writing, anyone format may be followed, both are acceptable. Question 1. (Do not spend more than 30 minutes on this question.) (i) Write a composition (300 – 350 words) on any one of the following :  (a) Write an original short story which clearly illustrates the friendship between a boy and his dog. (b) You mistakenly went to your school on a day which was a holiday. Everything was closed and the school was empty. Write a description of what you saw and heard.…